Nothing says fun like software issues

So yesterday, I was able to access my personal email through my ISP's webmail client without any problems. As a matter of preference, I opt to use Firefox so I can be one of those pretentious wonks who take umbrage with Microsoft, yadda-yadda-yadda.

Today? Doesn't work. I can access my webmail, but I can't actually view the email using Firefox. To do anything, I have to use IE, which I really don't like.

I swear that software exists purely to damage my calm.