[Ti] YOU MUST HOLD THE POWER BUTTON DOWN and AEBS Printer

[mac]

I did the original upgrade and thought everything was well.   Yesterday 
I was in the middle of working on a client's problem and a message 
popped up on the screen ... YOU MUST HOLD THE POWER BUTTON DOWN TO SHUT 
YOUR COMPUTER OFF.... It was in about four different languages... 
Anybody else receive this message ...  I think this is the second time 
this occurred, because the first time the screen was blank and I could 
not make the computer come back to life without holding the power 
button down (it was about 3 am when I woke up after I fell asleep 
waiting for some processes to finish).

Next issue ... I usually run the upgrades when they come available, 
because I have never had any serious problems.  Well my Airport Extreme 
Base Station was upgraded to 5.1.x last week and I could no longer 
print.  I had to do some research to find out what the solution was ... 
I ended up having to load the firmware 5.0.4 back onto the base 
station.  Printing fine now.

Lesson learned ... I guess I will not perform any more upgrades!!!