It still is not fixed in Ubuntu 12.04.2 on March 19, 2013.
However my understanding is, that it affects only 64-bit editions, using Compiz (3D accelerated) Unity.
For me checking off of hardware acceleration did't work, but I found that awkward workaround for this is logging into 2D session (click on Ubuntu logo in login screen and select Unity 2D).
It still is not fixed in Ubuntu 12.04.2 on March 19, 2013.
However my understanding is, that it affects only 64-bit editions, using Compiz (3D accelerated) Unity.
For me checking off of hardware acceleration did't work, but I found that awkward workaround for this is logging into 2D session (click on Ubuntu logo in login screen and select Unity 2D).