Had this over several nightlies, when switching from wifi to phone or vice-versa, get page not found error unless I reboot. Forum apps won't load either. I can start on the phone and turn on the wifi after the page loads though. For example, if I'm on wifi, reading the forum, and turn off wifi and go do something, then re-open the app later without turning on wifi, it just goes to a white screen. Won't load off of 3g unless I reboot. On the browser, in the same scenario, I'll get a page not found error unless I reboot.