Ever since I upgraded to 3.6.13, Firefox will often not load a webpage unless I click the link a second time. The first time, I'll click it and...it might work, but most likely it won't work and I won't notice it hasn't worked until about minute has gone by and it's done nothing. I saw that I had clicked it, because the link is highlighted..it just refused to do anything. So I'll click it again, and then it'll go. I've noticed this when I get a Page Not Found page. I go to click "Try Again", and I've seen that I clicked the button...but nothing happens, it doesn't even try to reload the page. I'll click it a second time, and then it'll go. This is so frustrating!