Hi! Was doing some interesting tests, (powerbook 1.67 DLSDHR) and the result was quite surprising to say the least. I used a high bitrate HD video clip and XBMC to test different setups and how many frames it skipped for the entire clip. 1. Tiger using XBMC gave me 1100 total frames dropped. 2. Leopard slimmed down with no gl.blocker, dashboard, spolight, 3Ddock etc etc gave me 740 frames dropped (nice increase vs tiger) 3. Leopard using spotlight, glim,blocker, 3D-dock with all Quartz effects enabled, dashboard enabled and indexing on gave me only 650 dropped frames!! This is strange, tiger loads so quickly it seems so "lightweight" yet in-game performance and HD video playback was not as good as a more bloated OS like leopard is. I always thought that the more lightweight a system was, the more performance you got. I really think that Leopard didn't get all that much more PPC optimizations in comparison with Tiger. (Due to intel transition) Anyhow... the weirdest part of the test was that the slimmed down Leopard yielded a slower HD video playback machine! I tried this test 2 times using terminal commands and "secrets" to verify that slimming down the OS HURT performance... WEIRD!! Comments? Experiences with this?