Cisco WLC 4404 Guest Access and Iphone 4.0

Hi All,

I seem to be having a problem with the Iphone os4 and a Cisco WLC 4404. It seems that when the Wireless network is setup for guest access that redirects the browser to a sign in page, the safari browser dies and the iphone drops off the network.

This does not effect an IPAD or an IPhone that is not upgraded to the new OS 4.0. This also does not effect an IPhone that connects to a SSID that does not redirect to a sign in page.

Any help that anyone can give for this, or if you need any more information.

Thanks

Simon