I have been running the 2.0 beta for about a month so far and I have had no major problems until now. Today I went to connect to the internet on my iPod Touch and nothing happened. When I went to settings the entire WiFi menu has been grayed out and it says "No WiFi." Here is a screen shot. I am going to try to restore and see if that fixes the problem. I just wanted to know if anyone else has come across this problem.