Chrome for Android works too.
Well I say "works" but both Chrome and Firefox have a weird issue.
I login and it says welcome Nicholas etc then it shows me the homepage and it appears that I'm not logged in, but when I click on posts I am actually logged in.
If it's any consolation Morphzone is having the same trouble at the moment.
Could it be a problem with the version of vBulletin both sites are using?