since upgrade to 12.10 vlc won't start and messes up everything

[Tobias k1fri]

hi everyone,

since i upgraded my pc from 12.04 to 12.10 vlc won't start. all i get is 
empty windows constantly popping up with very high cpu 
usage........system is sluggish, windows manager goes crazy, task 
switcher is disabled, launcher is locked, some applications are randomly 
spread to other desktops etc (see screenshots)...........this will go on 
forever until "killall vlc". after that the window manager still behaves 
funny..........i haven't been able to find out what's going on nor have 
i found a bug that would describe my problem.......

what do you think about that?