oh great, MTGox is under attack again right now

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I'm sure I'm not the only person who noticed this but right now, MTGox (as seen by MTGox Live) is getting pounded with an suspicious sequence of trade orders.  They're at about 5-10 per second nonstop and all are buy orders and are all of the size: 0.02, 0.09, 0.10, or 0.37 BTC.  They're all those same 4 values but are completely randomly sequenced though.

This has only driven the price up a couple cents US but it's been at least 1000 straight trades for easily 10 minutes and that's just how long I've been watching it for.  It's so many trades, I'm on an i5 quad core with 8 GB of RAM and a GTS450 and the javascript to draw them is causing this separate window to lag as I type.

Is someone's tradebot having a meltdown? Otherwise this is obviously a specific attack trying to crash the exchange with a high volume of low orders?  The same 4 values in a random pattern is textbook AI avoidance.  They probably have a guard that catches hundreds of the same order or same order sequence being placed in a row as a sort of DOS attack so they just made

As of right now, the MTGox Live graph line is actually frozen so their servers aren't doing so well.  This could be anything from an attack against MTGox Live viewers only to attempting to crash MTGox's trade servers or even something I haven't thought of yet.

Here's a screenshot of it as it's happening.  So imagine this but relentlessly for about 20 minutes now.