I have experienced a similar issue, unfortunately I cannot find the kernel error messages, I will rescan and see if I can get the same results.
Oddly enough my partition is also /dev/hda6 I was running fsck with the following options: fsck.ext3 -yfc /dev/hda6 ** Attachment added: "dmesg output" http://librarian.launchpad.net/6343488/dmesg.log -- "fsck -c" on a HDD with bad sectors (ubuntu feisty herd 3) https://launchpad.net/bugs/83848 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
