I've been running MacOS X 10.0/1 on my clamshell iBook for quite some time. My only major complaint is that MacOS X 10.0/1 apparently doesn't do a good job of supporting the graphics chip in the iBook (ATI Rage Mobility 128), which means that drawing things is a little slow. I've heard that Jaguar has improved graphics chip support, but I can't seem to find anywhere a list of exactly what support has been improved. Anyone know?