<snip> The one you attached isn't particularly hard to decipher. It's telling you that the com.apple.driver.ApplePMU preference file is corrupted. Locate the file and trash it. </snip> I've done a search for that file, or a reasonable facsimile and there doesn't seem to be such a file on my iBook. So far my iBook is working better, but I did have another kernel panic last night. Can't figure this one out. I'm going to do the repair permissions again. Thanks again for everyone who is helping me out. Dave.