Bigbilly, can you try to find out which process is writing these error messages to .xsession-errors, for instance using the tricks in that LinuxJournal article?
Usually the errors are prepended by the process number or name, but in your case they seem more like kernel warnings. Do you see these messages using dmesg? -- Disk activity every second every day https://launchpad.net/malone/bugs/35660 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
