Hi, Matthew.
First of all,
>I tried a few different host names including the default one
You should be using the one you provided to the setup.py script during initial configuration. If it was the default one, it should be "ce.gluu.info". You also should verity that at least inside chroot-ed container your hostname is actually set to this string.
A few questions:
1) Does your machine meet Gluu's minimal requirements (i.e. it must has at least 2,5-3GB of RAM, and has a 64bit OS installed)?
2) Is your browser updated to the most recent version available? Have you tried to access your Gluu instance with some other browser? Does it have any 3rd-party security-related add-ons installed? Do you have any anti-virus solution installed on the machine from which you are accessing Gluu's box, which tries to filter web traffic?
Regards,
Alex.