You got a fairly decent drive so you shouldn't have any long term issues. As for the file it may be corruption or a false alarm. 589 hours isn't much use, I got 12,399 hours on my 40gb. 4,782 hours on my seagate 160gb, being replaced due to spindle. 9,309 hours on my 250gb. 4,065 on my wd6400aaks 640gb blue.