I have 10.4.1 on both an iMac G5 and a TiBook G4. On the TiBook, starting with 10.4.1 (not with original Tiger installation) any image that is opened in Preview will have an overall green mask-effect over it until is is touched with the mouse. Also, if I drop a menu down, the area where the menu was will appear green as well. I am fairly sure it is a redraw problem. Might be low VRAM. G5 does not do this. Just wondering if anyone had seen or heard of this anomaly? Bob