Well, I tested it on my work connection which is what concerned me. I think it is the Proxy that we have at work. We use ISA server for our web access. Once I went a different route (same computer) it came up fine.
I'm OK with that. Hammered isn't really supposed to be a work-safe site anyway. Still, I'm curious to know why it wouldn't load on the web proxy. As far as I know (and I should know) we don't block anything.
I think my answer should be excluded from whatever you were looking to learn. I'm betting it is being blocked by a corporate firewall. I just realized that I don't see anyone's avatar if it's hosted by Photobucket.
Firefox/Mozilla vulnerabilities don't seem to me as big of a deal, because you really have to work hard for the programs NOT to update automatically. If you don't tell to update right away, it'll do it the next time you start the program.