Changes

If you close, shut down or exit Thunderbird (or Thunderbird stops on its own) and it you see the Thunderbird '''process''' is still seen runningin MS-Windows task manager (taskmgr) or linux process status (ps), then you have a shutdown hang. But Or perhaps you shouldn't just encountered a message that "Thunderbird is already running". The "already running" message can be a symptom that is not related to hangs, so it is essential that you check taskgmgr or ps. There are several reported [[#Bugs|Bugs]], but please only comment in a bug, or report the issue with no a new one, using detailed informationwhich you can obtain from the [[#Symptoms|Symptoms]] list below. In other words, because there are many causes and symptoms for hangsjust reporting or commenting that you hang is not useful - please support you report with data.

* '''describe the your environment'''

These bugs typically do not get fixed quickly. So if a bug's status is still open (not marked fixed), then it probably isn't fixed, even though a new release has been issued. You might check the '''bugs mentioned below''' to see which fit your symptomsexact situation from going through the [[#Symptoms|Symptoms]] list above. If none match your symptoms please [https://bugzilla.mozilla.org/enter_bug.cgi?product=Thunderbird file a bug] and include all the information requested gathered abovein [[#Symptoms|Symptoms]].