FYI -  I was going crazy trying to figure out why my sticks were going zombie almost immediately.  Based on this thread, I definitely thought that it had to be something regarding my USB hub / power supply.  I decided to fire up a Ubuntu VM and compiled cgminer as per the instructions on the first page of this thread.  NO ISSUES!!  I'll be running cgminer on Ubuntu until something is resolved.  Actually, the WinUSB drivers are a lot easier and less annoying than in windows... so perhaps I'll just stick with cgminer on *nix.