After upgrading to Hardy, so many of my extensions didn't work in Firefox 3, that I thought I'd try to downgrade back to FF2. So I used Synaptic to uninstall FF3 and installed FF2.

It runs ok, but I can't figure out how to get it to see my existing profile and extensions and such.

It sees my bookmarks, and my extensions are shown in the Addons menu, but none of them seem to be actually installed, and I can't adjust the settings. The preferences buttons for each extension in the Addons menu just don't do anything.

What did I do wrong, or do I need to reinstall all the extensions to get them working again?

Thanks