I have installed a new hard drive on my macpro, 1TB samsung spinpoint, and noticed it a bit slow so with disk utility I verified the disk and it says it is fine, but I went to windows through bootcamp and with the s.m.a.r.t. utility of speedfan I receive various s.m.a.r.t. errors and a fitness of 40%!! I tried a second time and it gave me 0% and said hard drive might have a fatal hardware error, then I went back to macos and tried again the disk utility and it tells me the disk is fine!! so how can I check which test is saying the truth? also, could you guys please recommend me a software to diagnose hard drives for macos (10.5)? thanks very much!