For the last couple of weeks it seems, video playback on my computer has been terrible, skipping, ghosting, tons of artifacts... just all sorts of problems. Payback in itunes is unbearably choppy, expe cially. I'm not sure when this started happening, but I do know that it wasnt always this terrible. Im on a 600MHz iMac G3, running 10.4.3, and the programs I"m using are the latest versions of Quicktime Pro (7) and VLC. I don't know whats going on, but its driving me nuts! Any ideas?