Version: (using KDE 4.0.0) Installed from: Ubuntu Packages OS: Linux When moving mouse quickly away from a task onto another task after the preview picture of the first task has been drawn, the preview picture of the first task sometimes stays when the preview picture of the second task is drawn even while mouse has been moved away from the first task. I have compositing enabled.
*** This bug has been marked as a duplicate of 157611 ***