Thw World of Goo game runs fine when the mouse is not moving, but it hiccups just when the mouse is moving. The bad is that game is mouse based. The issue does not occur on nvidia cards.
Here is a link to the demo version:
debian-sid, kernel 2.6.28-4
intel driver 2.6.1
I was already interested in this game, just didn't know it was out for Linux yet. Picked up a full copy, will play with it.
You didn't mention what chipset you were using, or include the dmesg or Xorg.0.log to help debug.
It works beautifully on my GM45.
Oh, there, in the summary. Sigh.
Anyway, still need the other info
I'm sorry but I can not reproduce the bug anymore.
The game is now working fine both with EXA and UXA.
I'm closing the bug and I will reopen if and when it reoccurs.