Google needs to update the Google Toolbar program for Firefox 5.0.

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

Google Labs has been working on a GTB 8 version, but it looks like it isn't made for Firefox - just for Internet Explorer.
http://www.google.com/support/toolbar/bin/answer.py?hl=en&answer=1111588#toolbar_info
So, maybe Google isn't going to be supporting Firefox any longer. That might be a move to force Google Toolbar users over to Google Chrome, which I believe has all those features built-in.

Thanks. I'll try that.

https://support.mozilla.com/questions/848602#answer-215097

Thanks for the help. I accessed the above link from (cbeasley), restarted my PC and voila! Thanks again.

P.S. FF may want to link their spellchecker to their toolbar. It's so handy to have a really fine spellchecker always at hand.

the question hasn't been answered. How do you revert back to the previous version of firefox?