It started about 4-5 days ago, I've noticed that when I reply to a thread, I just get that little bar up top that signifies that the page is loading or whatever, and the same happens when I try to send someone a PM(I only just found this out, was going to participate in the video game quiz thing that Stormrider is doing). I've done nothing to my browser in recent days. Firefox itself updated about a week or so ago, but I could still post immediately after that(or at least I think I could...), so not sure if that has anything to do with it.
Any help would be much appreciated. My posts still go through, it just doesn't show that they are, but the PM function is entirely useless, it just gets stuck loading that screen and never goes anywhere.