I think my iBook G3 700mhz is on its last legs. I've had the thing for close to 4 years and the only problem ever was the logic board. The logic board was replaced under warranty with the logic board repair program. Also there is no Apple Care on this. Anyways, a random green vertical line is on my screen. It is in the middle of the page and runs right from the top to the bottom. If I bump the case the line will disappear, but it comes back eventually. The odd thing is if I move the cursor over it, the cursor is on top of the line, but all windows are behind the line. Any thoughts anyone? Or I am getting closer and closer to buying a mac book?