IPhone 4 can't connect to Wi-Fi?

I recently updated my iPhone 4 to iOS 6 and everytime I try and connect to Wi-Fi, it won't let me. Instead the apple website pops up and it says "Log in" at the top, it does this everytime, I've tried rebooting my phone.everything!

I'm TRYING TO FIND OUT THE SAME THING.

Me to!

I have an iPhone 4 also and it wouldn't let me connect, all i did was reset network settings and when it finished restarting i would turn off the phone just once more and then tried connecting and it seemed to have work but i don't know if its temporarily or permanent but try it.