Comment 28 for bug 151674

Very surprising... After I wrote my comment, I get an idea.
I've open Ubuntu tweak, and added latest Compiz repository
"deb http://ppa.launchpad.net/compiz/ubuntu intrepid main #Compiz Fusion"
for a try of luck...
downloaded the updates, restarted Ubuntu, I have see on "General -> Display settings" of compizconfig, the option "Sync to VBlank" :O
I've enabled it, I've corrected the refresh rate (wrong 50Hz to 60Hz of my/all LCD)... and now the problem seem to be gone!
World of Warcraft on Wine, work correctly with Vsync ON!
Obviously compiz is enabled.
Now I'll test better with other pcs.