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Mon 30th Jul 2007 @ 23:40 2007: Dad or Employee?

Today, I'm taking the day off work, to be a proper "Dad" for the day. It's the summer holidays, so we're having to juggle these things. So I'll be spending a "work-day" away from the office, and with the kids instead.

The inability to understand basic concepts, the muddling of simple ideas, the basic lack of mathematical ability ("6x8 = 64"), the constantly-changing demands (no, I said I wanted "X", but I'll only moan if you do give me "X". I really want "Y"), the hopeless, pathetic need to repeat everything seven times until it finally gets drilled in (if at all)... Oh, I'll miss it all (if only for one day!)

PS, that is a genuine quote from earlier today: "So that’s 6Gb x 8 servers, ~64Gb."

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Mon 30th Jul 2007 @ 01:00 2007: Mark Thomas

I don't know what Mark Thomas is doing these days, but it seems hard to find his first series to buy. It was 1996, just before New Labour came into power. I came across a torrent but individual episodes may be available if you are interested. The 3rd episode was particularly interesting from a political perspective; they are all good, though.

1 Comment               

Thu 26th Jul 2007 @ 23:19 2007: Gentoo

Gentoo LogoIn a post titled So, can I have Gentoo back?, Daniel Robbins, the founder of Gentoo, seems to have a problem.

I must admit that I have not been a close follower of Gentoo Linux, but according to this post, and subsequent comments, it would appear that Daniel handed control of Gentoo over to a group of users/developers who requested it, but then (according to Robbins) failed to manage the not-for-profit organisation adequately.

It seems that the Gentoo motto should be "getting the fscking thing up and running is more than difficult" in more ways that one...

2 Comments               

Tue 24th Jul 2007 @ 00:02 2007: Often, I just love Sun

Size Matters - Jon Schwartz on HPC

1 Comment               

Sat 21st Jul 2007 @ 01:02 2007: I guess I can post it now ...

So now I suppose we can admit that the latest Harry Potter book has been on "the interwebs" for a good many days, now.

Those who care, probably even know the ending.

For myself, I managed nearly 2 pages of the first book, before finding it less interesting than Charlie and Lola, as mindless childrens' entertainment goes. Actually, for the first dozen or so episodes, Charlie and Lola is actually rather charming.

Anyway, you can all start a frenzy of piracy, for all I care. Myself, I'll stay well away, thank you very much. I just don't care.

However, a Maggie and the Ferocious Beast bootleg, please let me know!...

2 Comments               

Fri 20th Jul 2007 @ 16:10 2007: PayPal - Unauthorised Activity

Every now and then, someone buys a Shell Scripting PDF from my website. I'm glad they find it worth paying for, it's really quite flattering.

Unfortunately that means dealing with PayPal, who must have the fewest support staff of any organisation on the planet, because it appears to be impossible to speak with a human being.

Someone bought the PDF in June; the usual thing happened: they came to my site, hit the PayPal button, went to PayPal's website and provided an email address and matching password, okayed the transaction and were returned to my website to get the PDF. Nothing out of the ordinary there.

Today, PayPal tell me that:


Recently, PayPal received a notification from a user regarding unauthorised access to his PayPal account. As a result, one of the payments credited to your PayPal account has been placed in a temporary hold while we investigate the claim. PayPal constantly monitors transactions for unauthorised use of accounts in order to maintain the safety of our users.

They then went on to provide the details of the transaction.

I do not really see what an online vendor such as myself can really do about this; apart from holding off all deliveries until after the buyer can no longer dispute the transaction (in which case, they'll dispute it because it didn't arrive!), I've just got to send the PDF.

Now they have had a claim that the access was unauthorised, their "Fraud Specialist" will investigate, and - according to the website:
If the investigation results in a finding that unauthorised activity occurred, the victim will immediately be issued a credit for the full amount of the transaction(s).
So - unless the guy is shown to be lying, PayPal will just take the money back out of my bank account. Nice. They've done this a few times now, it does not give one confidence to do any "real" trading via PayPal.

However, their email says:
If this unauthorised access was a result of spoof or fraud, PayPal will cover the cost of the transaction.
I can not see what else it could be, apart from fraud. Indeed, even if the customer used his own account and then tried to reverse the transaction, that in itself would be fraud.

So if it's either legitimate (I keep the payment) or fraud (PayPal cover the cost), then there's no need for them to put the funds on hold.

3 Comments               

Fri 20th Jul 2007 @ 01:07 2007: Browser Statistics


It's rather skewed, because this is a geeky site, but FireFox clearly pushes Internet Explorer out of pole position.

Also, my knowledge of CSS is clearly below par, as this is drifting again :-(

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Thu 19th Jul 2007 @ 23:42 2007: Slightly updated look

new look
I've gone for the slightly brighter shades of blue (click the thumb for a higher-resolution view).

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Thu 19th Jul 2007 @ 23:31 2007: AI Draughts

Channel 4 claim that a "truly significant advance in artificial intelligence" has been made, as U Alberta, Canada, have calculated the results of every combination of possible moves in a game of draughts.

Apparently "An average of 50 computers were run together every day for years at a time" - in other words, "some computers". And they apparently enumerated all possible games of Draughts. The result, apparently, is that the computer can guarantee not to lose a game; its opponent's best chance is to draw.

I don't see what this does for Artificial Intelligence. I suppose we can't really expect the home of Big Brother to recognise intelligence, though.

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Thu 19th Jul 2007 @ 22:43 2007: Enigma Machine on Ebay!

enigma machineThere's an original WWII Enigma machine up on Ebay!

This auction for a very rare and legendary German WWII chifer machine ENIGMA in mint conditon, all original, nor restored and complete.

Very rare to find in this condition, MUSEUM CONDITION.

FULL WORKING CONDITION WITH EXTRA LAMPS.
If only I had the $24k it's currently at (reserve not met)....

2 Comments               

Mon 16th Jul 2007 @ 00:38 2007: PONG!

http://pong.alterfin.org/ has a PONG game. Use the left mouse button to launch a ball (when you, or the computer, loses). Use the mouse to move your bat (white, on the RHS) up and down.

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Sat 14th Jul 2007 @ 23:10 2007: Smoking in Public

As an ex-smoker (15-and-a-bit-months), I'm not one of those militant "nobody should ever smoke anywhere ever" ex-smokers.

Therefore, I like the suggestion that the 1974 Violence in the Workplace Act, prevents publicans from enforcing the new Smoking ban.

I don't know the logic behind it; when it was quoted on BBC Radio 4's The Now Show, I assumed that it had something to do with the idea that you cannot require an employee to enter into a situation which could cause violence to be committed against the employee.

However, Joey says (in the Manchester Evening News) that "There is the 1974 Violence in the Workplace Act, where it is illegal to harass or bully an employee. By telling a smoker that they cannot smoke may be viewed as harassment.", whilst David Kinsey (in The Independent) simply claims that "Charles Kennedy might care to visit a pub in rural Herefordshire that I walked past yesterday. In its window it had a notice that proclaimed: 'Due to the 1974 Violence in the Workplace Act, I am unable to enforce the smoking ban.'", without providing further details.

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Sat 14th Jul 2007 @ 22:17 2007: At last! I am the losingest!

Just thinking out loud ...

In last weekend's F1 Losers League, I (SlowBicycleRace) got up to first place. As Roland points out, this is only because I played my "Accelerator" card (double your points - to be played once in a season), and Jobjohn's Jobies, who had previously been winning, have yet to play their Accelerator.

I've scored 604 "real" points in 9 races, average 67.11 points per race, while Jobjohn has scored 625, average 69.44 points per race.

The Maths: Take one


So, when Jobjohn play their accelerator, they should hope to get (2.33 points more than me as usual), plus 69.44 bonus points, total 71.77 points, which would bring my 44-point lead down to a 27.77-point deficit. As we have 8 races to go, I will also end a further 8*2.33 = 18.64 points down, so I need to make up 27.77+18.64 = 46.41 points, or 5.80 points per race.

The Maths: Take two


On "real" points, I've got 67.11/race, JJ has 69.44/race. I got 65 extra points in Britain; JJ can expect to get 69.44 whenever they play the Accelerator. That takes the standings to 669 vs 694.44. Then I expect to lose 46.41 points, so the total deficit will be 71.85, or 8.98 points per race.

The Maths: Take three


I've lost!

Tha Maths: Take four


17 races + one Accelerator means 69.44*18=1250 for JJ, 67.11*18=1208 for me. Difference 42. So I need to stop losing 2.33 points per race, and start gaining 5.25 points per race.

Analysis


We've both got Spyker as a double-pointer team, so no tactical advantage there.
Jobjohn has Ferrari; I've got Honda as the second team; advantage me.

I've got Wurz and Speed as double-pointers; Jobjohn has Coultard and Schumacher. It's a close one; Wurz is the best of the lot, but Speed is consistently very bad, whilst Coulthard and Schumacher are simply mediocre. Jobjohn's choices have scored more overall, so the League clearly favours that level of consistent losing, over occasional dramatic losses. Advantage: Jobjohn.

Other drivers are Kovalainen (both got him; no advantage), whereas I've got Kubica to Jobjohn's Barrichello. Advantage: Jobjohn.

There's a shakedown still to come; that second Shakedown (1-31 August) will make or break my chances.

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Sat 14th Jul 2007 @ 00:22 2007: Shell Scripting CheatSheet

There's no decent shell scripting cheatsheet out there, so here's my first attempt:

UNIX CheatSheet

There are many blanks; I would love to know which blanks you would like to fill in...

UPDATE: This is probably a bit late, but this is a blog where I can collate comments

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Fri 13th Jul 2007 @ 00:31 2007: Trade protection in context

A recent post on slashdot regarding movie "piracy" has an interesting slant - at least, it isn't yet another car analogy:

Selling media content on little plastic discs is obsolete and as such is a shrinking industry. When the pond gets smaller the fish must ether get smaller or some fish must die. That is just life.

Look what happened when computers with word processing software made typewriters obsolete. Should we have had our governments spend millions to prop up the Smith Coronas and Olivettis and Underwoods and enact legislation to restrict the use and functionality of word processing software, or put a tax on computer software to fund concessions for ailing typewriter companies? Of course not, that's a stupid idea and very backward thinking.
I'm not sure about the pond analogy - why would the pond shrink? surely it is growing! Apart from that, this post seems to make a lot of sense.

... Unless I'm missing something?

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Tue 10th Jul 2007 @ 01:29 2007: Wintel vs UNIX paradigms

Joel Spolsky, the great software and management guru, has finally launched a data service. Unfortunately, he brings all of his MS Windows (and the "Good Enough" mentality that brings with it) along for the ride, too:

This is a professionally-hosted version of FogBugz 5.0, previously only available as a download...To prepare for FogBugz On Demand, we've done a lot of hard work over the past year...We decided to use high-end components for our hosting architecture: Dell PowerEdge 2950 Servers with SCSI RAID, Windows Server 2003, and SQL Server 2005. Yep, that's an expensive way to do it
And they have gone with a two-city solution: New York and Los Angeles.

That produces a number of questions; you can't replicate data across that distance:
To implement this warm backup feature, I wrote a SQL mirroring application that implements transaction log shipping: basically, it does an incremental backup in one city, compresses that backup, ships it to the other city, uncompresses it, and applies it to the warm backup database. Right now, we#re log shipping twice a day, so you might lose a day of work if an entire city blew up, but in a couple of weeks, we'll implement a system that does more continuous backups, and we expect that the warm backups will never get more than 15 minutes behind.
It doesn't need "an entire city" to "blow up", just an error on your local server or storage. I'm sorry, but that's not the kind of SLA that my customers require.

This idea of "Well, it's unlikely that everything will all go bad at once" is not an unreasonable business view, but it must be balanced with the question of how business would continue if the worst did happen.

If the data is a couple of letters, then losing a day's work may not be the end of the world. If the data is a day's worth of trading at NYSE, the NASDAQ, etc, then a few minutes can be worth millions of dollars.

This laissez-faire attitude seems to be a "new" thing which the Microsoft generation has brought to computing.

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Mon 9th Jul 2007 @ 00:28 2007: spam

This domain is currently the victim of a spammer's delightful attempt to sully my good name. As I am sure most readers (yes, that means you! No, not just you over there... both of you!) will be aware, the basic idea when spamming, is to use a credible "From:" address, which will not be blocked, and some random malware-infected PC, which will also not be blocked (because it, too, has no history of spamming).

This renders domain-based and IP-based spam-blocking techniques less effective; they must filter based on the content. As we all know, the content often consists of Shakespearean quotes, or the like, with an attached GIF promoting the virtues of some shady stock or another.

This time around, it seems to even include PDF files.

As a result, I am now getting bounces addressed to Trinity.Prietz@steve-parker.org, Deanne814@steve-parker.org, armand.Wirkkune@steve-parker.org and the ilk, letting them know that their emails were not delivered.

Possibly more disturbingly, I have had out-of-office autoresponses from Edda Klaaassen, Caroline Harper and Ruhof Bregje (you know who you are!) apologising that they are not at work to receive "my" spam.

It is interesting to see the failures which such attacks bring to light; okay, the obvious thing (from my perspective, right now) is that my mailbox gets flooded with the bounces which the spammers don't care about. That's not the main thing, and nor is the autoresponder issue I noted above.

One problem, is how SMTP servers deal with the two issues they may be diagnosing here:

  1. Simple SMTP server spots a bounce, and replies accordingly
  2. Spam-Aware SMTP server spots spam, and replies accordingly
In the first case, the SMTP server thinks that it's doing me a service, by pointing out that some spam could not be delivered. That server will happily deliver spam to whomever it has been configured to store mail for.
The second class could be smarter; instead of acknowledging that the address is valid, but the content was spam, the wording could allow for the possibility that the address wasn't valid in the first place. Still, I guess that that is still largely irrelevant, as the spammers will never see the bounces anyway.

But still, that's not the problem; of those which I have had time to look at, none have forwarded the full headers which indicate the real source of the spam. So I still don't know where those spams are coming from. Okay; in reality, I guess that I do know; they're coming from innocent users' PCs, who do not realise that their PC has become part of a botnet.

And that is the real problem. Gladys Unwood, who doesn't patch her PC, because "I don't keep anything valuable here, just my little notes", and so she doesn't care if she's got the latest patches, or using insecure software. Until her PC starts to melt down under the weight of the spam it's sending, what does she care?

The other extreme, of course, is the "clever" SMTP server which can spot spam, but doesn't know what to do with it. The first response I got from this campaign being made in my name, was:
Your message to:
-> [snipped]*[snipped].lt

was considered unsolicited bulk e-mail (UBE).
Subject: Invoice
Return-Path:
First upstream SMTP client IP address: [210.193.238.178] mail.sherrinmotorsport.com.au
According to the 'Received:' trace, the message originated at: [138.122.11.172]
Our internal reference code for your message is 16112-06-3/IQh6Nbo-86vy.

Delivery of the email was stopped!

Gee, thanks. Not only has your spam filter saved your customer from another spam, you have taken the time (and network bandwidth) to tell the (alleged) sender that you have made this decision.
I really, really, really, do not care what decision your server has made about an email, whether or not my domian name was used in the "From:" field. That is not a clear way to tell where the email originated. It is also why I make sure that email sent from my domain, does indeed go through a server associated with that domain. If you receive email claiming to be from @steve-parker.org, but the address is not (at time of writing) 64.40.100.150, then it is not from me. Just drop it.

I intend to post a child-post under here, once I have had chance to analyse all the stupid responses which have come from this attack. (It has happened before, and I don't epxect it to last for long; I could be wrong)

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Sun 8th Jul 2007 @ 22:18 2007: Go Nuts!

These antibacterial wipes have an extra 50% free. That's great. A boring product which I don't really want to buy, I just need to have, will cost me a little bit less than it would have done otherwise.

So, I totally fail to understand the instruction to "Go Nuts!" with the extra 28 wipes.

What kind of bacterium-spreading activities do they think that I have had to refraining from, due to a lack of available wipes to clear it up?!

(oh, and the Squirrel logo to the right says "Nutty squirrel bargain - Be smart! Stock up", which wouldn't be "nuts" advice if (say) a bacterial warfare attack was imminent, but (a) I'm not aware of such a plan, and (b), squirrels and/or nuts still have no connection whatsoever with antibacterial wipes.)

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Thu 5th Jul 2007 @ 16:21 2007: Binary adding machine

http://woodgears.ca/marbleadd/index.html has built a binary calculator out of wood.

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Wed 4th Jul 2007 @ 01:18 2007: Straw Man

There seems to be a lot of discussion going on in the good ol' US of A at the moment, about Creation - 'Intelligent Design' "versus" Science. I have come across many rants against ID - this is just one example.

I would love to enter into an intelligent debate with those who say that God created Creation, and those who say that such a claim is not true.

I am sure that there is much to be gained from sincere and frank conversations between those in the Dawkins camp, and those who find his rhetoric somewhat lacking. (Okay, I showed some bias there. Still, I do sincerely believe that humanity could benefit from "full and frank discussions".)

However, all that I do hear about the USAian "debate" about the subject, is tosh like the above-linked above - pure straw-man arguments. "If we were 3 miles closer to the sun then we wouldn't be here"... who ever defined that as a tenet of the Christian faith?!!

What I have never heard, is these "ludicrous" claims made first-hand. I see the "enemy" in citations, but I have yet to see anybody make such ludicrous claims. The militant anti-religious group seem to be fighting a made-up enemy.

There are many observed things which can not yet be explained.

I do not understand why certain parties are getting so excited around the concept that we should teach "here's an idea we don't understand" as opposed to "here's another idea we don't understand, but (for entirely unscientific reasons) dislike"

3 Comments               

Wed 4th Jul 2007 @ 00:51 2007: Multiheaded Linux Box

http://www.linuxtoys.org/multiseat/multiseat.html has a nicely detailed description of how they built a single Linux server with six heads. Ideal for CyberCafe or University applications. ISTR suggesting such a configuration for a CyberCafe back in 2000, but being unsure as to how well it would work. Those plans never finalised; this seems to be a working solution.

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Tue 3rd Jul 2007 @ 23:48 2007: 10th Dimension

There are two five-minute talks here; The first talk is co-sponsored by the makers of Anadin and Paracetemol.

Imagining the 10th Dimension part1

The second part is sponsored by some gentlemen who may be met, by arrangement, in car parks and other public venues, with the purpose of providing certain medications not necessarily available by the NHS. Being a strongly academic subject, areas frequented by students are a good place to start looking for such individuals. For example, Mancunians may find that heading south from the University district would lead them to Moss Side, from where the appropriate medications may be procured with relative ease.

Imagining the 10th Dimension part2

And if that doesn't cook your brain, it is likely that nobody can help you... you may be a terminal physicist :-(

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Sun 1st Jul 2007 @ 22:57 2007: Favicon

There are many ways to create a "favicon" icon - like the "#!" which is shown to the left of the URL in the browser's navigation bar, and perhaps to the left of the page title in the browser's navigation history and bookmarks.

www.favicon.cc must be one of the easiest, though.

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