I recently upgraded to iOS 6 on my iPhone 4, and since then I am unable to connect to any WiFi. When I try to connect to WiFi, it briefly connects, then brings up a dialog to a bogus Apple website. What is going on?
I don't have a proxy server setup, or anything like that.
So far I have:
- Rebooted access points
- Restarted Phone
- "Reset Network Settings" on my iPhone
Here is what is brought up:

That just magically appears when I try to connect to WiFi from Settings.
EDIT:
Seems like many other people are being affected by this.
I am having same problem on iPhone 4s. It connects to router then tries to bring me to apple.com page. Then kicks me off network.
