On some sites the embedded flash video's are not working properly. Strangely enough, youtube is working fine. I have browsed the forum and have tried the following solutions, none of which seem to work: - Disable Realplayer (not installed on my computer) - Downgrade to flash 11.2 - Upgrade to Firefox 14 What ''does'' work, is to run Firefox in safe mode. This implies that one of my extensions/add-ons is giving me a hard time. The safe mode shuts down all my add-ons, and obviously that is not what I want. So I went to my add-on list and disabled them one by one, trying to figure out which one's the troublemaker. Strangely enough, even when I disable all of them manually, the problem isn't resolved. So in some way the safe mode shuts down more than I can do manually. Does anybody have any idea how I can figure out what causes the problem?