Comment 4 for bug 530649

I can confirm this has occurred to me in the last week on ubuntu 8.10 and 9.10 both on Ubuntu desktop AMD64. I noticed the error when my system started freezing and during a reboot when fsck failed due to a failing hard drive but I saw this error come up intermittently while scanning the hard drive. The hard drive was in fact dying and so I replaced it that day with a new Western Digital Caviar Black and installed Ubuntu 9.10. Within a few hours I started seeing this output in dmesg for the new drive.