Ouch.

Make sure your root filesystem is mounted read-only. (Run ``ro''.)

Then run ``e2fsck -fn /'' and see what it says. This will just generate a report about what fsck thinks is wrong. Post it here.

If you run ``e2fsck -fay /'', it'll ``fix'' it, but I don't know exactly what it'll do.

What can you tell us about those directories?