I'll try my best to help you, but mind you I'm relatively green compared to some other people you may hear from in a short while.
Firstly, check out this site: http://forums.devshed.com/linux-help...lly-71202.html
What that's basically telling you is to use fsck (manually, as stated), on your filesystem to check it. If you're running just a straight Linux drive, fsck /dev/hda1 as a command should work.
From the little that I've read (again, referring to the link), this might be in regards to a hard reboot that screwed up something with whatever Linux ext systems use to mark drives as clean or dirty.
Hopefully this points you in the right direction. Google this phrase for more information, slightly different than what you wrote but I found some stuff on this issue:
UNEXPECTED INCONSISTENCY Run FSck Manually without irqbalance:[FAILED]