I will attach the screenshot from that forum post.
(Another post in the same thread suggests that it occurs also with ATI and nvidia hardware; but it's not clear that the other poster is referring to this problem. The original subject of that thread is a different problem.)
My video driver is: xserver- xorg-video- intel 2.8.1-1ubuntu1.
The same problem was reported in the ubuntu forums in this post:
http:// ubuntuforums. org/showpost. php?p=7944153& postcount= 6
I will attach the screenshot from that forum post.
(Another post in the same thread suggests that it occurs also with ATI and nvidia hardware; but it's not clear that the other poster is referring to this problem. The original subject of that thread is a different problem.)