[ubuntu] 9.10 upgrade says I have failing hard drive

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http://ubuntuforums.org – I just upgraded from 9.04 to 9.10 and when I restarted and got to the desktop, there was an icon in the top panel that when hovered over said, "One or more disks are failing." This was not happening before I upgraded. When I clicked on the icon, a window opened titled "Palimpsest Disk Utility." It said that my hard disk "has many bad sectors." I clicked on a link that said "More information" and another window came up titled "SMART Data." This window also says the disk has many bad sectors, and I ran the Short self test. The window says "Last self-test completed OK." Near the bottom of the window is a list. In this list, the following items are printed in red: "Reallocated Sector Count, Normalized: 100, Worst: 100, Threshold: 10, Value: 1 sector." "Current Pending Sector Count, Normalized: 100, Worst: 100, Threshold: 0, Value: 983 sectors." I wonder if it is just a coincidence that the failing hard drive appeared immediately after upgrading and in fact I do have a failing hard drive, or if this is some kind of bug and I have a normal hard drive. The computer is just over a year old. Does anyone have any advice for me? Should I back up my data and replace the hard drive? Any comments would be greatly appreciated. (Hardware)