Leopard has been giving me the weirdest graphical glitches in the past week and a half-- check it out. I'll be using the system and doing things just fine, and suddenly it looks like.... THIS: At first I thought it was just iTunes 8 (and, indeed, it seems that it doesn't happen if iTunes 8 isn't running), but it looks as though it's taken over the system. I get misaligned Dock labels, the entire screen shifted +/- 10px to the right (check out the black edge) and a bunch of other absurdities. Usually the only way to resolve it is to restart. The OS works fine, it just looks like this... Any idea what's going on? As evidenced by the fact that it can be captured in screenshots, this is an OS thing, not (necessarily) a hardware defect-- though my Powerbook is about 3 years old now and is definitely on its way out (1.5 GHz G4). Has anyone else had this experience?