On Sep 13, 2006, at 5:58 AM, jim carbone wrote: > My question is: Is this a function of the fact that it was cloned > to a new drive (almost like a major defrag) or is it because of the > massive amount of free space on the drive? If the 160 is newer then it could be all or any of the previous answers plus any other advances that have been made in drive technology since your bought your Mac. Get xbench from http://www.xbench.com/ it's a pretty simplistic test, but it makes for a good sanity check on drive performance and the rest of your hardware. Phil