I recently switched over to OS X ver. 10.2. Now, everytime my Mac wakes up from sleep, my internet settings are gone. I have to restart the computer to restore them and access the internet. I've tried clicking the lock box on network settings to prevent changes, and that didn't work. I've also tried to delete the PowerManager.plist file as suggested in a troubleshooting article, but I can't seem to even find that file! Any suggestions??? Thanks!