Hi there,
My girlfriend has a MacPro (early 2008) and everything is ok except her keyboard.
It stops to respond in Finder randomly. It can work for one or 2 weeks without any problems, but it can stop to respond twice a day as well.

She can still use a keyboard in her applications such as Photoshop, Quark, Mail, but she can't rename/create folders and files with the keyboard in Finder.

Her keyboard has been changed, so the problem is not hardware!

All updates are done!

Mac OS X 10.5.6
Mac Keyboard

Does anybody know how to fix it?