I would be surprised if it was down for more than 24 hours following that though.
That's the thing... so they take down the Internets within 30 mins. Does it really matter _that_ much if it's just back up again in a day or so (and after that, now the folks trying to figure out who owns all the bots have much more data to figure out the responsible parties)? Doesn't seem like an event of this nature would be more than a bump in the road or yet another reason to sell some "I survived the Internet B0tst0rmz of 2009" t-shirts. Speaking of that:
1) Gather monster-storm of zombie PCs
2) Take down Internets
3) Sell "I survived the Internet B0tst0rmz of 2009" t-shirts
4) Profit
I've noticed several design suggestions in your code.