after 2 months of frustration, i finally got fed up and went back to leopard. there were a lot of little irks for me, but what did me in was trying to run after effects cs4 and feeling like i was stuck on a pentium 3 windows 98 machine. as a point of comparison, the last project i rendered on snow leopard took 57 minutes, made the computer virtually unusable for multitasking, dropped my free ram down to several mb and generated several gigabytes of page outs. right after wiping and downgrading to leopard, i tried the exact same project. it rendered in 22 minutes, during which i was able to surf the net and watch hd youtube videos with no sense of lagging on my system. free ram hovered around 300mb and no page outs were generated. i also found that when i needed to reboot after os updates, 10.5 restarted at least twice as fast on my system as 10.6 did. anyway, i'm not here to start some battle about snow leopard universally sucking or anything. i realize for some people its been great. i just don't understand why it was such an awful experience on my machine. both os's were clean installed and didn't use any account migrations or anything. both os's were maintained with the latest updates. the same software was installed on both, and all the software was generally mainstream and considered snow leopard compatible. i just don't get it. i'm running the unibody mbp in my signature.