Ruckus Wireless - Guest Access from Mac devices

Hello,

We are trying to set up our Ruckus system to allow internet access for our Sixth Form students through the guest network feature.

We are now at a point where it works perfectly from a windows-based laptop, but when we try to access any webpage from a Mac device (tried iMac with OSX Tiger, iPhone 3G and iPhone4) we get a message about 'too many redirects'.

Has anyone else had the same problem?

We are behind a proxy server, so I don't know if this has anything to do with it, but we can't change this setup...

Mark.