One thing I've noticed is the URL for extensions have changed because of the NEW multi-language support.
Old url format: addons.mozilla.org/firefox/<addon#>
New url format: addons.mozilla.org/en-US/addons/display/<addon#>
Speak of multi-language support, you can now add a other dictionaries to your Fx 2 spellchecker. However your choices are currently French and actually that is your only choice.
I really, really, really hope the old URLs will auto-redirect to the new English addresses.
