See my suggestion in this post (it worked for that happy user): https://support.mozilla.com/en-US/questions/839721

You need to update the following. The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question.

• Adobe Shockwave for Director Netscape plug-in, version 11.5

1. Check your plugin versions on either of the following links':
   • http://www.mozilla.com/en-US/plugincheck/
   • https://www-trunk.stage.mozilla.com/en-US/plugincheck/
   • Note: plugin check page does not have information on all plugin versions
   • There are plugin specific testing links available from this page:
     • http://kb.mozillazine.org/Testing_plugins
2. Update Shockwave for Director
   • NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
   • Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
   • When the download is complete, exit Firefox (File > Exit)
   • locate and double-click in the installer you just downloaded, let the install complete.
   • Restart Firefox and check your plugins again.
   • Download link and more information: http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox

This had nothing to do with my query. Let me make it more clear and to the point. Since this version doesn't support Google tool bar that had my Bookmarks there in. I don't want this version, I want to revert to the previous version......

Is that more concise and to the point ?

Let me be concise and to the point!!!!!!

I am trying to save you some grief by using a product, Firefox 4, that is no longer supported and will not be updated even if security issues are discovered.

If you insist on re-installing Firefox 4, maybe someone else will come along and post the link. I will not be responsible if you are later infected by a virus or hacked by a piece of human scum!!!

A piece of Human Scum ?......as if you are any more special than anyone else in the room......how arrogant...but, as you wish.

Thank you for your unbiased opinion dear one.

Much Love.

Philip

The Google Toolbar 7.1.20110512W version works in Firefox 5.0 by using the Compatibility Reporter extension, I tried it myself due to the large number of postings about the GTB this morning.
https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/

Thank you my Brother for your professionalism and service to the greater good.

This was spot on !

Namaste,

Philip

You're welcome.

Please click the Solved It button next to the answer that solved your Firefox support issue, it appears when you are logged in, so this thread gets marked as Solved to help other users who may have this same problem.