Credit Tony E

To downgrade to Firefox 3.6 first uninstall Firefox 4, but do not select the option to "Remove my Firefox personal data". If you select that option it will delete your bookmarks, passwords and other user data.

You can then install the latest version of Firefox 3.6 available from http://www.mozilla.com/en-US/firefox/all-older.html - it will automatically use your current bookmarks, passwords etc.

To avoid possible problems with downgrading, I recommend going to your profile folder and deleting the following files if they exist - extensions.cache, extensions.rdf, extensions.ini, extensions.sqlite and localstore.rdf. Deleting these files will force Firefox to rebuild the list of installed extensions, checking their compatibility, and reset toolbar customizations.

For details of how to find your profile folder see https://support.mozilla.com/kb/Profiles

went back to FF 3.6 last night just couldn't take the FF4.0.1 anymore..

I liked the speed of the new Firefox 4, but you left off the use of Norton toolbar, cards & log-ins. I went back to 3.6.

Firefox did not leave of Norton toolbar etc Norton have not upgraded their products to FF4.01 YET AGAIN they are slow to upgrade.

Question: when I uninstall 4.0 (never could get 4.0.1 to take), I trust that I am not logged onto the internet via Firefox. So, to access Mozilla to load 3.6, how do I access the internet to get to the website? I'm computer friendly - but far from an expert here!

Thanks....

run your norton live update. this will solve the problem