hello My mac pro hard drive got laggy and it crashes & takes like 10 minutes to load!!! Worst of all it sometimes doesn't load at all gives me a black screen with errors I guess its sort of like a blue screen of death for windows. Anyways I tried cleaning the hard drive optimizing and it doesn't work I only have 37GB available because I do a lot of video editing. I have a basic set up of mac pro with 1gig of ram etc etc. I still have the warranty I dont know though should i send it to apple? I dont want to pay for a new hard drive, since i still have the warranty. I dont think my hard drive over heated because its pretty cool here but i might be wrong. I have 37gb left out of 250GB. Also where can I buy mac pro hard drives? I think I need the 750GB. Anyways I need some kind of advice of what to do because i do a lot of video editing and when i start to do video editing lately it just takes forever. However the hard drive is running fine without giving it any kind of work, however when doing multiple taks sometimes it freezes. Also I need to purchase new ram I guess 1 gig inst enough but apple mac pro ram is sooo expensive i need atleast 2gb. Is it possible that my hard drive started to crash because i have only 1gb of ram and i put a lot of work to it? Also if I send it to apple will they erase my hard drive or should i erase my hard drive for safety??? Thanks!