Firefox I have been using for years on my pc, and all has been fine, until a couple of days ago i tried to uploads a thumbnail to youtube and it just hangs, it works on other browsers, also uploading a video, again no progress at all it just hangs at 0% uploaded. Ive tried everything and no change, ive changed nothing, one day it worked and then it stopped. I upload videos everyday so this needs to be working for me, or I need a new browser asap as this is my business. I cannot find anything about this error online. v 129.02 (64 bit). Please advise.