PC randomly hangs, loop-aes suspected

Hallo!

I am running gentoo on encrypted root [system A] and storing data on 
encrypted raid1; everything was fine untill two weeks ago I began to 
leave my PC on for night. The problem is that it hangs completely with 
no messages in /var/log/messages (freezes immediately after some hours 
operating) and I have no idea what exactly is wrong. Hangs are random.

What I have done already:
1. tested memory for 8 hours - no errors.
2. suspected my own kernel configuration, copied my gentoo to 
non-encrypted partition, recompiled same kernel with same .config, using 
genkernel [system B]. Tested it for nearly 24hours - no hang. Other 
differences between those 2 systems:
 ______________________A, B
    kernel compile method: manually, genkernel using same .config
    kernel startup:                 initrd.gz, initramfs created by 
genkernel
    raid1:                               yes, no

kernel version: 2.6.22-gentoo-sources-r9

Turns out, that most likely there is problem with loop-aes. Or not as 
likely - with raid1.
I can send my configurations and other information, but I need advice to 
further localize the problem!


--
Jan

-
Linux-crypto:  cryptography in and on the Linux system
Archive:       http://mail.nl.linux.org/linux-crypto/