I have also noticed that Gnome-do shows some lag v.s. my previous Hardy install. It still has a little bit of lag even without compiz, but with compiz it is almost unbearable (1 ~ 2 seconds), at least for me. So, my guess is it is a combo of the new Xorg and a lack of driver support. What did they change in-between distros?! It's driving me nuts!
I have also noticed that Gnome-do shows some lag v.s. my previous Hardy install. It still has a little bit of lag even without compiz, but with compiz it is almost unbearable (1 ~ 2 seconds), at least for me. So, my guess is it is a combo of the new Xorg and a lack of driver support. What did they change in-between distros?! It's driving me nuts!