WiFi "Login Screen" never allows connection to browser based Login
Im an Arizona State University student, and their WiFi access is based on a browser-screen Login. IE, to sign into the wifi I have to open a webpage, request a page, and it will redirect me to the ASU login where I have to enter my student information to gain access. This was no problem on the old ios, however ever since updating my iphone 4 to ios 6, the login pop-up from the WiFi menu just returns an "Error opening page". It isnt just my school web page that does this, other browser-based logins do this as well. How can I get my phone to open the browser login page in my browser, like I used to, instead of through the WiFi login page that cant ever load it?
Iphone 4 with ios 6, not the 4s or 5. I've checked for further updates. but it says "up to date." I have no issues connecting with my laptop, it's just the new login method in ios 6.
Any suggestions?
iPhone 4, iOS 6