Ack... had a power outage and ran into this one today too. Several configuration files from programs I was running ended up trashed. This also explains the corruption I've seen of my BOINC/SETI files when hard-rebooting in past weeks.
System: Linux mars 2.6.28-8-generic #26-Ubuntu SMP Wed Feb 25 04:27:53 UTC 2009 x86_64 GNU/Linux
I'm running RAID1 dmraid mirroring w/ an Asus Striker Formula II MB, in case it matters.