It seems I had manually installed the add-on in addition to the bundled version and I think this was conflicting - after uninstalling the manual copy of the addon it now works - so for anyone else affected, in Thunderbird, open the Tools menu then select Addons, and in the Addon Manager tab, if there is a Remove button alongside the Unity and Messaging Menu Indicator Addon, click this to remove the local copy. When you restart Thunderbird you'll notice the Addon is still listed but without the remove button - this is now the bundled copy of the addon which should hopefully work.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/876043 Title: Messaging Indicator doesn't indicate when new e-mails arrive Status in “thunderbird” package in Ubuntu: Incomplete Bug description: Neither the Messaging Indicator nor the Thunderbird-Launcher icon give any indication when new e-mails arrive in Thunderbird. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: indicator-messages 0.5.0-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic i686 ApportVersion: 1.23-0ubuntu3 Architecture: i386 Date: Sun Oct 16 19:01:39 2011 ExecutablePath: /usr/lib/indicator-messages/indicator-messages-service InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110901) SourcePackage: indicator-messages UpgradeStatus: Upgraded to oneiric on 2011-10-06 (10 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/876043/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

