thanks for your post, but I'll need more details to get a picture of 
what is going wrong.

What do you mean by .. 'becomes "not responding"'? 
Which apps are running? 
What do you see when you press the Menu button? 
Are you sure the Apple Remote is activated (=> green light in front 
of the entry in Remote Buddy's menu)? 
Does the remote control work with Front Row?

Best regards, 
Felix

P.S.: My apologies to everybody else for being behind schedule with 
answering forum posts and emails. I'll catch up with all of you next 
week.