Firefox Sucks Right Now

For some reason, I can't log on to my deviantART account in Firefox.  But I can log in to it from Internet Explorer.

I also can't log in to a message board I belong to, but I can log into a different message board that is on the same server.  Also like devART, I can log into this particular message board in Internet Explorer.

I am confused as to why this is so.  Any suggestions?

CAPS LOCK CANNOT CONVEY MY FANGIRL JOY

DUDE.  HALLMARK HAS JUST RELEASED THE LIST OF THE KEEPSAKE ORNAMENTS FOR THIS YEAR.

( More *squee!*age behind the cut. )