Help: WinKey + L stopped working

[djusenet]

Hello --

Weird problem: I noticed that I cannot lock or do fast user switching
in XP Pro using WinKey + L. It still works via the Start menu, but when
I press WinKey + L nothing happens. They keyboard is fine and other
WinKey combinations (E, F, D, R) work just fine.

Any ideas how I can fix it? Is it possible that some app remapped it?

Many thanks.

 

[djusenet]

Any ideas anyone, please? thank you