My wife's iPad, which has been working perfectly since she bought it almost a year ago, has, as of a few moments ago, stopped connecting to our home WiFi network. My laptop (2010 MBA) and her laptop (2012 MBA), both iPhones (4s) and my iPad (New iPad WiFi) and my brother's laptop (2011 MBP) all connect to our WiFi perfectly.
However, when her iPad tries to connect it will work but then the "login" page that happens at, say, Starbucks, will come up (the Hotspot Assistant or whatever it's called) and shows a "Page not found" error. Then the WiFi disconnects.
It was working fine earlier, now after upgrading to iOS 6 the problem has come up.
Is it a bug that's affecting a lot of users or is it something that's been around for a while and just never happened to her?