usb keyboard spacebar not working.

[iNPUt]

Alright this is really strange, ive got 2 usb keyboards and the space keys are not working on both of them, it was working a few hours ago and now I have to use a ps/2 keyboard which works perfectly.

Anybody heard of a problem like this before, all the other keys work fine appart from space, I am very confused.

Thanks for any help.

 

[iNPUt]

oki downloading some ubuntu now, if it work time to reinstall vista, was waiting for win7 what a time for it to happen.