Problems with Apple Keyboard (some keys not working)

I've started having some computer problems lately and I'll state them both here just encase they are related.

iBook G4
I was using my computer doing nothing in particular and my keyboard stopped functioning correctly. The number and letter keys do not work. I can cmd-tab and use the letters when in combination with the cmd key as in when I quit programs etc. It's quite annoying. I've never had a problem until now.

It seems like I'm having another problem and I'm kind of suspicious since it started on the same day. I can't figure out the pattern but my computer's finder just freezes. I won't be able to do anything suddenly. My dock doesn't respond, folders don't respond...unless I use the keyboard shortcuts for the actions.

I've never had this problem before...

Any ideas? I've also deleted and re-paired the keyboard and such.

Thanks in advance...Leo

thanks for your help

I'm going to hold out a few more days to see if I can figure out anything else that won't take as long but if I have to do this...I'll just do it.

thanks, Leo