Firefox Ctrl+W does not work after stand-by

If I start my Windows XP VM after stand-by, the keyboard command Ctrl+W in order to close a tab does no longer work in Firefox.

The error does not occur after shutting off the VM and booting into it.

1) Can other people reproduce this error?

2) How can it be fixed?



Thank you.

 

I would be glad if someone could reply, if they DO NOT have the problem. It would at least let me know that it is something specific on my installation.

Also to note: I do have the wireless Bluetooth Apple keyboard. Could the problem be related to this??

Currently, I am quite clueless on this since the keyboard seems to function properly otherwise in every way - except for the fact that Ctrl+W does work only, if I boot into the VM (and it does not if I use stand-by)

 

The problem no longer occurs after I made a completely fresh XP installation.

It seems that the original XP installation, which I had transfered into VM and where the problem occurred, was simply too old/too instable.