Review for Gmail Manager by BlackWizard
Rated 3 out of 5 stars
Auto-login and message counts are disabled for me as well.
FYI:
forums.mozillazine.org/viewtopic.php?p=7637405#p7637405
is where you will find the fix for this problem. Reading some of the thread, it may be related to some changes google made to their gmail service...
To create your own collections, you must have a Mozilla Add-ons account.