keyboard problems

Mom just bought a GE HO97798 keyboard, as a replacement for the gateway keyboard she decided to spill beer on too many times. Problem is, the keyboard seems to be very slow in response, as it's often times not registering keys hit when typing fast (my normal rate), or it'll just register a key press as if the key were held down.

What can be done with this keyboard to fix the problem? I can type at 70 words per minute w/o errors, but it took me 5 minutes on this message as the keyboard is glitching out all over the place (hell, it uses caps lock now even when caps lock is not on).