When registering for the network with an expired account you get redirected back to the registration page (after successful registration) when you try to browse to a website. The only way to get it to work from a user standpoint is to disconnect from the network and reconnect, then it's fine.
New accounts do not have this issue. After registration you can start to browse without problem.
The fix I have right now is to delete the accounts set to expire, so the mac address is treated as new and the looping issue won't occur.
Jordan Guthrie