I had started this thread earlier today about no internet. I unplugged Express and everything was working fine. I now want to run both Express and Extreme but I keep running into problems I think. I'm using Extreme as my router and Express to extend my network to all floors. I keep getting a "Double NAT" error with Extreme and with Express, the error I get is "extend network" and "wireless network". With express, it also fluctuates between 0-1 clients (is that normal?). All my lights are green, I have no amber lights on the actual units or on Airport Utility. I have wireless throughout the whole house so while I want to fix the errors, the I also don't want to mess anything up and be without internet again. Thoughts?