It looks to me like you've been bitten by this bug: https://launchpad.net/distros/ubuntu/+source/linux- source-2.6.15/+bug/26119/+index
If you do a 'hdparm /dev/hda' you should also likely notice that "using_dma = 0 (off)". That seems to be the other symptom of this problem. -- Intel 440BX: 'hda: I/O error' https://launchpad.net/bugs/49265 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
