Comment 13 for bug 85424

The "fix" does not solve the issue for me. This is still occuring. I didn't even see this bug until after I tried deleting the hal files in my rc.local file at every bootup.

There is a tiny patch that might be worth looking at to fix this problem:

http://launchpadlibrarian.net/7223911/68-fix-umount-stale-hal-mtab.patch

It was posted in bug #95368.