PAGER problem - visible icons of stopped applications

Hi, all!
Some time ago I began having such a problem on Suse 11.1 (KDE 4.1.3) - in pager I have more and more icons, which are not connected with running applications (a kind of ‘ghosts’ - new ones appear after restart of the system :slight_smile: )? It’s really infuriating. Anybody had such a problem?
I would be grateful for any help.

Best wishes,