I can confirm what Rocco says: I installed Thilo-Alexander's libqtgui4_4.7.0~beta2-0ubuntu3~lucid1~ppa5_amd64 package (only) and the bug disappeared.
I can confirm what Rocco says: I installed Thilo-Alexander's libqtgui4_ 4.7.0~beta2- 0ubuntu3~ lucid1~ ppa5_amd64 package (only) and the bug disappeared.