Sorry for maybe opening to many threads, but I couldn't really find any other which is similar to my "problem. Since I got back into PPC Computing, I've discovered several "anomalies" with PowerPC Macs and the GUI animations of OS X Leopard. For example, I currently run a Dual 2GHz first Gen. Power Mac G5 with a Radeon 9600 64MB installed. As well as an iMac G5 2GHz with another Radeon and 120MB of VRam. And when I draw back open windows from the dock the animation is pretty sluggish, while whole OS is very snappy, these animations especially on the minimising effect remain very "frame droppy". Like if you would run it on a card that doesn't even support Quartz Extreme. It is actually even worse on the Power Mac with less VRam than on the iMac. Once, I upgraded the Card to a Geforce 6600GT, which seemed to solve that laggy GUI but I ended up reinstalling the Radeon cause the NVidia card is simply too loud and "Sauerbraten" (the game, not the food) is crashing on higher settings. Now to my point, I also have a nice little 12" PowerBook G4 in use, which has an NVidia card on board, also with just 64MB VRam, it is the only G4 computer I have in use and everthing is smooth and snappy, the entire OS (with the sierra theme installed) feels just like on a modern Mac. I also hooked the PowerBook up to a 20" Cinema display, and everything remained the same in terms of smooth animation. So the screen resolution doesn't seem to be the issue. And now I'm wondering, is it a G5 specific problem or just crappy drivers? I remember when I owned a G5 Quad (around 7 years ago) the GUI was also kinda lacking. As far as I can tell, Intel based Macs never had a problem with that, even that old 2007 MacBook with (urgh..) Intel GMA ,that my family is using, always ran smooth on Snow Leopard / Lion and it still does. Has anyone else encountered a similar issue, or is that PowerBook just something special? Or was Apple so angry at the G5 after the switch that they decided: "okay fellers let's make Leopard run as ugly as possible on all those G5 Macs, to show the world how great our new Intels are and how peeved we're at IBM for not delivering a mobile G5!"? I mean even a Geforce 3 is better than these old Intel onboard snails.