Hi all,
You have no idea how happy I was to find this post. My MacBook Pro was purchased in June 2006, to use for me at college. Use it a ton, but that the point of computers, right, they are meant to be used. Have had lots of problems, my first battery was one of those damaged ones, had to get that replaced. Then installed Leopard, computer was freezing all the time, reinstalled Leopard and it seemed to work better for a while. Then last summer (pretty much right after my warranty expired) it started doing what everyone else has been describing, vertical lines across the screen and constant freezing, especially when watching videos.
Took it to the apple store a few weeks ago. Naturally, it didn't freeze while I was there, that would be too easy. The guy looked at it and said nothing seemed wrong. Since he couldn't figure out the problem, he seemed to default to "corrupted hard drive" and told me to reinstall leopard, since I said the problem began after I installed it.
I believe I installed leopard around january of 2008, and that was also around when the problem with freezing began. However, I think the problem has been my ATI X1600 all along, and it was just an unfortunate coincidence that my ATI X1600 problems began around the same time I installed leopard. This merely disguised the real problem for a while, since I blamed leopard. It's not leopard.
Does anyone know why this problem takes so long to show up? My computer was bought a year and a half before it started freezing all the time.
When I was in the store a few weeks ago, I asked the guy in the store what could be causing the horizontal line problem and he said the video card, and I see now that everyone agrees. I'm annoyed that I just paid $34 for reinstallation disks to fix a corrupted hard drive when that's not even the problem, but I'm more annoyed by the realization that this is going to cost hundreds of dollars to fix. I have a phone call scheduled with apple today, will let you know hows it goes.