Same problem. I will set my laptop down and come back and the light around the power cable is no longer glowing. I tried a couple different outlets and even installed it in a different surge protector. The weird thing is all I have to do is unplug the part of the adapter that is plugged into the wall or surge protector and plug it back in and it comes back on. Or just turn off the power switch on the surge protector and turn it back on.

I am almost 100% sure this is do to leopard. I just installed OS X 10.5.2 toward the end of last week going from tiger. Just started to notice the power problems the Yesterday and today. My battery life does not seem to be as good as it was with tiger or panther. Still better than what most of you report. I think I got 4 hours out of it yesterday. Also, I got a replacement power adapter under apple care less than a year ago. I have never had this issues in the over 3 years I have had this powerbook until yesterday.

This is the first time I have upgraded to a new operating system this early in the release and I feel it has been a waste of time and money so far. As a matter of fact my laptop is performing fairly well other than the problems mentioned above. However, my wife is graphic designer and her apps would open and do basis things ok but when it came time to collect for output or do a Print as PDF high res comercial print quality there was no way. We will have to spend another 600 to upgrade for adobe CS2 to CS3 and there is still no guarantee it will work. Freehand will probably not be updated to work with le0pard.

So I spent several hours doing a erase and install the old operating system so she could get her jobs out. We reinstalled everything. Like I said, not a good decision to go to leopard so far. I am going to stick with it unless more problems come up or my power adapter keeps acting up.

iMac G5, 12" Powerbook Mac OS X (10.5.2)