Surfing apples pages in their forums and found out that there is an invisible file that deals with deep sleep in os x. The post said to delete the "com.apple.Powermanagement.xml " file in this directory path "Macintosh HD/hidden/var/db/SystemConfiguration" Use TinkerTool 2.32 <http://www.bresink.de/osx/TinkerTool2.html> to turn on your invisible files and you will find the culprit in no time at all. Guess what It works!!!" k "T-Minus 2 Weeks And Counting" <http://www.apple-zone.com> "iPod Old vs. New - A Comparative Analysis" <http://www.ipod-zone.com> "Loophole Lets Big Hard Drives Inside Cubes" <http://www.cube-zone.com> On Wednesday, June 11, 2003, at 12:09 AM, Jim Robertson wrote: > I've done a bit more experimenting. The device that prevents sleeping > is my > Dymo LabelWriter 330. This didn't happen until I installed the > "release" > version of the 330's software. Guess I'll report that to Dymo. > > Repairing permissions didn't help. I am using a powered hub. > > Thanks, everyone, for all the suggestions.