i have a 2006 mac pro that i use as my personal web server. i had lion installed on it, and every thing was working fine. last week i started getting a blank screen, but the system was still running. i couldn't get the screen to come back on, or screen sharing, so i had to hold the power button down to restart. the problem got so bad that it would do this while i tried to reinstall lion, and then later snow leopard. somehow even with the blank screen, snow leopard got installed. so far it hasnt crashed while typing this. now the question is - do i buy a new mac pro? can this one be fixed and still run the latest operating system? or go another route and buy a mac mini or something else? remember i use this for my personal server - the data i have is priceless to me. i also have a lot of files - 2-3 TB worth, so a mac mini would be difficult, and that number continues to rise.