Firefox v.29 slow down on Youtube

[Kharbanda]

I had updated my browser to Firefox v.29. This one is the latest. I am having a performance issue with Firefox. When I go on YouTube entire browser freezes. I cannot move the mouse cursor nor I able to open a new tab. After long time Firefox respond back. I thought this issue will be resolved by upgrading. But it did not helped much. I am in need of help to get a proper option to make it work. I tried so many things but it is not working.

[Beatricef]

It looks the flash plugin in your browser is damage which is giving you this issue. You have to re-install that. You can go in Control Panel > Uninstall program and you can remove the flash player from there. Just remove it and donwload the latest one from Adobe site. And install it back again. This will fix the issue. A number of time damage update cause this issue. It will start working fine once it is re-installed.

[AliyaK]

There can be some addons that are causing the issue. Try to remove them. Go in the addon section by clicking on the menu key and there remove things which are not needed. This will boost your browser speed more. It also happen due to incompatibility. Your addons are causing the slow performance issue. You can also reset Firefox settings back again and check back. It will be more easier for you to work after that.