Today all of a sudden many Android devices (Nook Color, Amazon Kindle Fire, LG Optimus V, ...) and a Mac Mini. I can get the devices to connect to our enterprise network without issue. But when I switch over to the Guest stays at attemping/obtaining IP. This so far has been in one area. I have rebooted to 3 APs in the area, disabled then re-enabled the wireless cards on all the devices. Any ideas?