Kernel is Gentoo's own:
Linux defiant 2.6.28-gentoo #4 SMP Sat Jan 3 21:56:33 GMT 2009 x86_64 Intel(R) Core(TM)2 Quad CPU Q9450 @ 2.66GHz GenuineIntel GNU/Linux
The files that were zeroed when my machine hardlocked I'd imagine were the ones that were in use; my desktop env is Gnome and I was running a game in Wine. Wine's reg files which it would have had open were wiped and also my Gnome terminal settings were wiped. Not sure how often it would have been writing to them but it would have only been tiny amounts of data if it was.