Haven't checked VM sources, but a quick test on Windows shows same  
behavior as you describe on Mac.

Quoting tim Rowledge <tim at rowledge.org>:

> For anyone interested in what is in the VM code, see files
> sqRPCEvents.c
> sqUnixEvents.c
> sqWin32Window.c
> sqMacUIEvents.c
>
> and look for uses of getInterruptKeycode() So far as I can see each  
> one checks for the  interrupt key code and whacks the interrrupt  
> Semaphore instead of saving the keypress. Somewhere, the Mac code is  
> managing to both not hit the semaphore and still pass in the  
> keypress. Are any of the others?
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> Programming is an art form that fights back.

Cheers,
Juan Vuletich