... When the guest system changes resolution (as happens sometimes during installation or startup, so especially in situations when you don't always want to watch the VM), the window is brought to the current desktop. ... Citation from the http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=542479
I have the same problem. Can somebody help me? fvwm-2.6.5-3.fc18.x86_64 TIA, Bob