Mouse & keyboard button don't work anymore

Hi

I got this thing that keeps bugging me.
My mouse & keyboarf button has stopped working in systempreferences it wont even load...
if I press it once it just keeps loading and loading and if I press it again the window goes gray.

I also noticed that the option to make the menubar nontrancparacent is no more... theres not a trace of it.

I've re installed the system 3 times and it seems god at the start but after i have updated and installed my programs it stops working...

It's starting to make my hair gray...

Anybody got a clue?

I run 10.5.5 but it's no difference in 10.5.6...

 

What programs you installing?

Load them one at a time and restart, maybe you can find the offending item that way and see if you can live with out it.

Just my tuppence worth...

 

Yeah im starting to wonder if it is the systemenhancer and SwitchResX that I need to install to be able to install Illustrator...
Hum... Well I removed the systemenhance and SwitchResX thingis now... is there a way to reinstall the systemprefernces without reinstalling the whole system AGAIN?

 

Does anybody know if I can use something from my iMac... Like some pref file that obvious have f**ked up.