We are having an issue trying to connect to guest network. Sometimes it brings up the captive portal page and sometimes it does not. The times it does bring up the captive portal page, it could take up to 5 minutes to come up on the iPad. I have tried iPhones , Android tablets, Windows computers, a Linux laptop and MAC computers and they work fine. None of the iPads are the 3G models, all are Wifi only. The models are iPad 2 and the new iPad. I am not sure which version of the iOS. We are running 6000 controllers with M3 cards with AP-125's running 5.0.3.3 code