On Jan 4, 2004, at 2:24 PM, arjan.bos at icu.nl wrote: > Rumours are that the 1.4.2 upgrade will solve many graphics based > performance problems. This 1.4.2 is currently in Developer Preview 2, > so it's there for you to try out. But be advised that there is no > other uninstall for 1.4.2 than re-installing the complete OS. Thanks, I think I'll pass on the developer preview. If I had a dev box here I'd try it, but every Mac I own is currently in "mission critical" mode and can't afford to mess one up :-) Overall, I must say I'm fairly happy with Java apps as far as speed. I think it's the actual difference in system bandwidth between the PowerBook and Power Mac G4 that causes the dramatic difference in speed, rendering the shapefiles in ArcExplorer. The Power Mac will render in 2-3 seconds the same file that takes the 1.25 GHz PowerBook 20+ seconds to do. It's possible I need to drop in the full 2GB of RAM in my PowerBook because the data won't fit into 1 GB RAM, and the Power Mac has *dramatically* better thruput on the disk I/O system when it needs to page RAM in and out. I haven't updated the RAM in my PB - seen the prices on those 1GB modules? Cripes, I could justify buying another PowerBook before sticking that much money in RAM. -- Chris