Big improvement.. though there is still beachballs when doing intensive stuff in Finder or Safari. No biggie, just an irritation.
Though I've noticed that 4 finger swipes (horizontally), when I place 4 fingers back down again to switch apps, sometimes it takes the 3rd or 4th time on placing my 4 fingers down again for the app I've highlighted to be switched to. If I press enter, it happens instantly.
Obviously, this is more an issue with Apple tinkering with the multi-touch trackpad, than a OS X 10.6.2 issue, but never-the-less it remains there. They fixed some trackpad issues with 4 finger swipes in 10.6.2, but there is still some quirks.
Man, the multi-touch trackpad was perfect in Leopard! Scrolling, tapping, accidental tapping being recognised, 3 and 4 finger swipes. Everything was recognised when you wanted it to be and it worked beautifully!
Anyone else still experiencing not quite the same trackpad performance as Leopard?