Comment 25 for bug 575897

The problem here, which happens on sites from time to time, is that they use lazy poorly written UA sniffing to check if they support a browser. I've seen plenty of sites, frequently banks, that have a list of UAs they support and have their site automatically say they don't support any others. Their whitelist gets the working site and everyone else gets an error message or broken code. It breaks for Linux not because of anything having to do with Firefox or Linux, but because in their lazy world Linux doesn't even exist. It looks for the versions of Firefox it supports on Windows and Mac, then assumes the rest are incompatible. It's irritating, but it happens (though less frequently these days, I think). In these instances it's not that Mozilla is treating Linux as anything other than a Tier 1 platform, it's the site doing it.

Aside from hacking around it with UA spoofing, as mentioned above, the only recourse for things like this is to tell the site to fix it. After I confirmed this bug it needed a little more investigation, and one of use probably should've done so and moved this to the Technical Evangelism component to have someone ask them to fix it, though sadly, that often goes nowhere too. Sorry. Glad it's fixed now, though.