A way to stop the Freezes in some PowerBooks.
Some of us have been turning off the processor nap function, Im not sure of what exactly are the pros and cons of using this way to stop freezes, but at least will give a clue in finding the cause of this problem.
To turn off this option, you have to get the developers CHUD tools, that are incuded in your xcode files or download them from apple in this page
http://developer.apple.com/tools/download/
Once you download it and install it, restart , then go to prefernces panels, in the HARDWARE panels there will be a new pane, called PROCESSOR, open it and there you will see the option to turn off NAP...uncheck it and you are done. To make it more accesible choose the option in the bottom to Show control in menu bar. Everytime you restart the computer you will have to go and uncheck this NAP option. Some other guys have done startup scripts to make it automaticaly, but I prefer to spend a couple of seconds in doing it.
Here is another link to a thread I posted before when freezes started in my new PB, It may help you in findig the way.
http://discussions.apple.com/thread.jspa?messageID=2093998#2093998
I still have to understand more about NAP function, learn the risks, pros and cons...so if you have the same problem and decided to try this option, post your results, your PB model and any other suggestion that will help to find out whats causing this.
Any suggestions, comments, knowledge about this will be appreciated.Thanks.
My Powerbook is a HR 15 in PBook at 1.67ghz, 1.5gb Ram
I have 4 days with out a freeze since I turned nap off.
PBG4 1.67 15in. G5PPC DP2.GHZ, G4 400MHZ Mac OS X (10.4.6)
PBG4 1.67 15in. G5PPC DP2.GHZ, G4 400MHZ, Mac OS X (10.4.6)