Hi Bob. I just tested Live/Hotmail and it worked with the latest SP6 and Firefox 12/13Beta/14Aurora/15Nightly.
Have you made sure the extension and plugin are both enabled? I forgot there were two items that needed to be enabled for this to work.
Also, have you tried creating a new profile? I know it can be a pain to reinstall your extensions and get everything the way you like it but in most instances all problems can be fixed doing this. I find many Firefox issues usually come down to problems with settings in a stored profile. You can use Xmarks to sync your bookmarks and restore them in the new profile. You can use FEBE to restore extensions and themes and such (after backup up in the original profile). Just be careful restoring any settings as those are usually the problem.
For more on creating new profiles please check out:
http://www.borngeek.com/firefox/profile-tutorial/
http://www.ghacks.net/2011/10/22/switch ... h-switchy/
Hopefully this will help you get to the bottom of the issue. I know creating a new profile can be somewhat painful but with some planning you can limit that pain. Good luck in finding a solution.
Leland
PS If you use the version 13 Beta or newer you have one more option:
http://www.ghacks.net/2012/05/17/reset- ... s-awesome/
