I recently got this problem. I checked my config and realised I had messed it up.
Things I had to change:
Clipspace Fix=On
Pixel Shaders=1.3
I also have the various VBO options turned on although I doubt I'd need 'em.
Btw.
Wine 0.9.11 are now able to run AO.
The minimap are too small, some areas are too dark and you'll loose text & textures when it rains. (Turn off Environment Effects?) Maybe something to try if you've got major problems with Cedega? At least you'd be able to verify it's something with your Cedega setup.
No, Clicksaver doesn't work in Wine either although it did print out an error message "Unable to process 48 bytes from server".
Edit: I also found that I'd frequently crash out whenever the game wanted to play a video on the billboards. When you're playing on the free accounts you can't disable videos but I found that if I replaced any
.bik in the
mediacache directory with empty files they wouldn't be played and crash the game for me. :)