My Macbook Pro (2007 model) is giving me trouble since a few weeks: It would freeze randomly when accessing folders and take up to 10 minutes to respond. Also finder would often crash. I finally backed up, formatted the drive and reinstalled, however that did not solve anything. Since the freezes are only occurring when accessing the hard drive I decided to replace it (even though S.M.A.R.T. status was fine). So I put in a OCZ vertex with 120GB, reinstalled and first everything looked great. I could access everything without freezes (now with amazing SSD speed), but then after a few hours the problems started again. Whats left to do? Any ideas are very welcome.