DON’T hack your system code! Worse will follow.
 
OK I have previously posted about a fix for Narcoleptic Powerbook, that involves using some root-access terminal commands in order to remove some System/Library/Extension files, and that allows a faulty top-case/trackpad temp sensor computer to run despite faulty hardware. 

Now things turned worse with my laptop. Apparently, my Powerbook is now running WITHOUT the relevant sensor-files, and was doing so OK until 3 days ago. 

Then, the machine started going into deep-sleeping at random despite absent system files. I tried various options and found, that my system.log file (like you can read through Console) logged a range of errors, between 'loop' error related to some network activity, to 'bluetooth' errors. All were effectively stopped by turning off the PMU. 

However, turning off the PMU will also disable the battery read-out that has various disadvantages, you can't use software to shut down the machine, you can't put it to sleep. Furthermore, disabling the PMU had my Powerbook do then crash / do instant complete shutdowns similar to reports about MacBook (Pro)s named "Random Shutdown": 

The computer would simply, every 7-20 minutes, shut down completely without any warning. This is taking the severity of the perceived problem, in my view, a step further. 

This new aggravation of the problem effectively makes my Powerbook largely useless for what I bought it for. 

Read the rest of Wolf’s post at http://discussions.apple.com/thread.jspa?messageID=2993292#2993292http://discussions.apple.com/thread.jspa?messageID=2993292#2993292shapeimage_1_link_0
N.A.P.
Sunday, 27  August , 2006