I had this problem in my PowerBook's harddisk when I run Disk Utilities.
S.M.A.R.T. Status: Failing
Lucky, this PowerBook is still under warranty.
My 12 inch PowerBook G4, 1.33GHz, was bought with upgraded 80GB HDD @5400rpm (Apple's CTO).
This PowerBook was bought on 4th May 2004.
What am I doing now? backing up my hard disc... It's a very painful job.
UserAgent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/412 (KHTML, like Gecko) Safari/412


Good timing for the Intel x86 based portable Mac 




