Hello, hopping someone might provide some insight to a problem that I've started having with the bitcoin program.

Randomly a week ago (after a restart) bitcoin started erroring out with a failed to load blkindex.dat message. I tried completely uninstalling it (including deleting all data files associated with it) and reinstalling. It works for a day, then eventually errors again. I just formatted and reinstalled windows yesturday and it was working fine, until I get home today and it wont load again, same error.

Anybody have any ideas?