Well, I thought sleep was working in 10.5.8 because I can force sleep from the apple menu and the machine deep sleeps. But it will not go to sleep by itself. I have SleepEnabler.kext in E/E. I do have Asere's patched DSDT and i've set the ABLN code to 0x4F. Is there some setting in sys prefs that I've missed? Or something else? Or maybe some other kext is getting in the way?