I also have this bug on a clean Edgy install. I used Gparted to fix my swap partition but I don't remember if it happened before noticing that hibernation doesn't work or after. I changed my fstab nad resume entries to plain old /dev/sda5, I'll test it in a moment.
-- After running mkswap, swap space is discarded, system fails to hibernate (invalid swap signature) https://launchpad.net/bugs/66637 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
