Youtube freezes or hangs firefox but works great in Internet Explorer

Every time pull up youtube in Firefox it immediately freezes or hangs the entire browser. the only thing I can do is close down Firefox via the task manager. This happens every single time. It used to work fine. I've even disable accelerate video. Nothing seems to work. The only time it kind of works is when I uninstall and reinstall firefox and/or flash player. Then the very first time I pull up youtube it will work great but when I close down the browser then reopen it and go to youtube, I have the same exact problem as before.
Firefox will pull up youtube with no problem when I uninstall the flashplayer (of course can't see videos then) but once it's installed youtube freezes.
Also Internet Explorer pulls up youtube videos great, just like Firefox used to do. Don't know what's wrong or what's happened but youtube immediately freezes or hangs Firefox when flashplayer is installed in firefox

Hey guys I think we've got a fix for this one. As most often the case the glitch is not with FF but with some plugin or incompatible piece of SW.
Troubleshoot: Uninstall FF, uninstall flashplayer, uninstall all brower toolbars add ons etc. (use Adobe Flash uninstaller if necessary (http://kb2.adobe.com/cps/141/tn_14157.html#main_Download_the_Adobe_Flash_Player_uninstaller)
Then reinstall most recent version of FF and then most recent of Flashplayer.
DO NOT add, enable, attach anything else at all. Just Bare FF and Only most recent flash player.
If you had Zone Alarm toolbar add on earlier and have uninstalled and not reinstalled it, FF is likely to pullup youtube videos with no problem.
Zone Alarm toolbar is incompatible with FF when flashplayer installed and pulling up a youtube page.
It's likely other toolbars may also be incompatible so just install the naked browser and then the Flashplayer. If it works you can begin reinstalling addons etc one by one.
Magic2012

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