spontaneous machine reboots

[rihad <rihad@xxxxxxx>]

Machine running Squid 2.6 with kqueue+aufs on FreeBSD 6.2 reboots 
spontaneously every 2-3 days. We've practically ruled out hardware 
problems by replacing the box and having the same problems.

Squid port build options: everything off, except aufs and kqueue.

Some squid.conf lines:
cache_mem 300 MB
cache_replacement_policy heap LFUDA
cache_dir aufs /cache 50000 128 256
cache_dir aufs /cache2 50000 128 256