My Mac Pro 2.1 has been dropping out all the USB devices ever since an update to 10.6.8. Every time I wake my Mac up from sleep the USB devices seams to not have any power to them. Microphone and isight work but no lights. UPS does not work. I have to restart my machine before I can get them back working. Contacted Apple Care support (although now out of phone time help period). They have never heard of this problem before and want to charge me $60 to try thing that might not fix the problem. I did try the restart with "option, command and P & R buttons pressed whilst boot up, but it did not fix. Does any on else have any suggestions on how to fix this anoying problem?