Keyboard problems 8.04

[Damian]

I have an Aluminium Apple Mac keyboard that worked fine until I upgraded today to 8.04. Now the F keys appear not to work and the num lock key goes on only, leaving the letters on my keyboard largely off apart from some which become numbers. The only way to turn off the Num Lock was to use another keyboard.

So how can I get my F keys back (I use alt F2 a lot), and how can the Num Lock be turned off

Thanks for any help