What type of keyboard is it? You should try cleaning all of the keys and then try again, and if that fails, I'd suggest returning it if the warranty is still good on it.
By the way, I do believe I know you from a different forum token, unless your name happens to be some strange coincidence.
Intel C2D E6320 / AMD Athlon X2 3800+
Gigabyte 965P DS3 / DFI nF4 Ultra-D
2GB OCZ Gold PC2-6400 / 2GB OCZ Gold PC4000
eVGA 8800GTS 320MB / eVGA 6800GS 256MB
150GB Raptor / 74GB Raptor
2x500GB / 320GB
OCZ GameXStreme 850w / OCZ StealthXStream 600w