Please check if all your plugins are up-to-date. To do this, go to the Mozilla Plugin Check site.

Once you're there, the site will check if all your plugins have the latest versions. If you see plugins in the list that have a yellow Update button or a red Update now button, please update these immediately.

To do so, please click each red or yellow button. Then you should see a site that allows you to download the latest version. Double-click the downloaded file to start the installation and follow the steps mentioned in the installation procedure.

That is pop-up opened via JavaScript, so make sure that you aren't blocking such content.

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

• Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

• Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do not click the Reset button on the Safe mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Hey thanks alot dude!It helps and now it's working fine!Because i always thought all this i have automatically update function but i don't know why this time it didn't automatically update..now i have set it to auto update again and hope it works now.

@ co-el Thanks for your help though,but it's solved by iamjayakumars.Thanks guys..

I tried updating my plugins and flash player but still not unable to see any you tube video Buffering at link to site . Is there any Mozilla compatiibity isuues with blogspot blog  ? even video from you be video Do i need to re install my mozilla ?

Ok its Fixed now ! by Reinstating Mozilla and flashplayer  :>