The Google Toolbar "will not be supported on Firefox 5 and future versions."
http://googletoolbarhelp.blogspot.com/2011/07/update-on-google-toolbar-for-firefox.html

http://www.google.com/support/toolbar/bin/answer.py?answer=1342452&topic=15356%29

The Google Toolbar 7.1.20110512W version does work pretty good in Firefox 5.0 by using the Compatibility Reporter extension. But not every feature works 100%.
https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/

http://googlesystem.blogspot.com/2011/06/enable-google-toolbar-in-firefox-5.html

See if this extension gives you the Google Toolbar features you want:
https://addons.mozilla.org/en-US/firefox/addon/googlebar-lite/

GBookmarks (Google Bookmarks for Firefox)
https://addons.mozilla.org/en-US/firefox/addon/gbookmarks-google-bookmarks-fo/

problem is I have 2 mail address with Google ,personal, et Professional.......

So should I just ignore the update of Firefox ?....................;

and stay with Firefox 4 Beta ?

The lack of the Google Toolbar won't keep you from being able to use Gmail in Firefox 5+ versions. Take a look at different "Gmail" add-ons to find one that provides the features you want.

https://addons.mozilla.org/en-US/firefox/search/?q=Gmail&cat=all&x=0&y=0

thanks for a million ,

I'll take your advice,

but the Firefox4Beta is simple to use , and I have get used to it,

May I keep Firefox 4 Beta without updating Firefox6, ......as Firefox6 keepon requesting to update....... archi-king

Sticking with Firefox 4.0 beta isn't advised, it has known security vulnerabilities that were fixed i Firefox 5.0.

Sorry , I have been with Firefox5, But it cannot support Google Toolbar which is very important for my work, as I am an architect, all my collèges have Google Toolbar, as I have 2 gmail accounts, Firefox 5 refuse to "add on" gmail !!!

Sorry, I loved Firefox, I came back to Firfox 3.6.8, now And Firefox keep on insisting me to update to 5...............

As I said, Professionally speaking, if I cannot work with GoogleToolbar I am obliged go lieve Firefox and go for Googlechrom.

That is a prety

archi-king architect consultant