Hi--this is my first post in a while, but I need some major help. Here's my situation: I have a cable modem connected to an Airport Extreme as the primary router for my 2 MacBooks and an iPhone 4. I also have an Airport Express I use for AirTunes. So, I bought a 2nd Airport Express to extend my network via ethernet. When I connected the 2nd Express, somehow it threw off the delicate balance of the Extreme and Express1. The Extreme started amber blinking, lost internet, and had to be hard reset. After resetting the Extreme (and unplugging Express2), ONE of my MacBooks is unable to access certain websites (Facebook being one) on both Firefox and Safari, but is able to access most others. The other MacBook and the iPhone can access ALL sites. So I cleared the cache and the cookies. No dice. I then went in and added 220.127.116.11 and 18.104.22.168 to the DNS servers. No dice. I have the Extreme connecting using DHCP and in Bridge Mode. Anyone have any ideas?