not sure if its 10.6.2 specifically, but quite a few times now i've had my trackpad stop responding to clicks/taps. the cursor is still responsive, and scrolling/swiping still work, which makes me doubt that its a hardware issue.
another issue is that after effects seems to go ram crazy. no matter how little ram i devote to the program in after effects preferences, when i start a render, it immediately eats up the full 4gb and starts creating massive amounts of pageouts, which never happened previously. this makes even simple renders take way longer than they should. being third party software i realize its not just an apple issue, but it still is a frustration.
on the up side, wifi dropouts and the wacky expose behaviour seem to have stopped. of course, there are some people on this forum who seem to think any problems with snow leopard can only be the users fault, so in that case, i guess i'll just take credit for fixing these self-inflicted problems myself. now if you'll excuse me i gotta go install a bunch more haxies and migrate a bunch of old user accounts, since you know, thats what i do.