For the past week or so, my Mac Pro has started to act really strange. Here are a few of the problems I've been experiencing: 1) When I boot it up, it boots to a light blue screen and stops loading. I have to manually turn it off, and turn it back on. Same thing. After about 3 or 4 times of manually rebooting, it finally loads to my desktop. But, the desktop is covered in magenta horizontal lines and I cannot click on anything. Time to reboot again. After the 5th or 6th reboot, it finally loads all the way and I'm able to click on icons. 2) Once I finally get the Mac booted up and running, it will freeze every minute or so for about five seconds. Sometimes I'm able to move the cursor, and other times I'm not--but I'm never able to click while it's locked up. Here are the specs of my Mac: Mac OS X Version: 10.5.1 Processor: 2 x 2.66Ghz Dual-Core Intel Xeon Memory: 5GB 667 Mhz DDR2 FB-DIMM I haven't upgraded the OS because some co-workers of mine began experiencing problems with InDesign locking up after upgrading. I work as a designer and spend 50+ hours a week working on this computer. I do not have any other Macs, so if I have to send this one in to Apple, I will be unable to work and therefore unable to make any money, pay rent, tuition and all of my other bills. I truly cannot afford for this computer to give out on me. Any help would be REALLY appreciated. It is so stressful to boot up my computer and sit there crossing my fingers and praying that it will load, so I can work and afford to support myself.