Changes

Shutdown hangs, where Thunderbird is still running after shut down, are not all alike. The Steps to reproduce are helpful (which may require some experimentation), and how often you see the hang (always, rarely, etc). Also, answers to the following easy questions help identify your the type of hang. :# If the problem is easily reproduced and you see a hanghave extensions installed, please supply does the following informationhang happen with Thunderbird started in [http://kb.mozillazine.org/Safe_mode safe mode]? If it can't be reproduced in safe mode then the problem could be an extension and you should contact the extension author.#* does hang happen without calendar/lightning extension? ({{Bug|532435}})

# run netstat -a -b -o | grep -i thunderbird (or for windows, in MS-Windows in a dos command window do netstat -a -b -o in a dos command window) - are connections shown from thunderbird to ldap, imap mail server, or other protocols?# If the problem is easily reproduced and you have extensions installed, does the hang happen with Thunderbird started in [http://kb.mozillazine.org/Safe_mode safe mode]? If it can't be reproduced in safe mode then the problem is probably an extension ... but extensions normally aren't the issue.#* does the shutdown hang happen without calendar/lightning? ({{Bug|532435}})

# was online or offline used, either via your explicit action, or automaticallydue to a dropped network connection?

Also helpful are steps to reproduce, and how often More technical ... if you see the hang (alwayscan, rarelyplease attach:* stacktrace file to bug using _hang_ instructions:** [https://developer.mozilla.org/En/How_to_get_a_stacktrace_for_a_bug_report How_to_get_a_stacktrace_for_a_bug_report]** [[Thunderbird:Testing:Get_A_Debug_Thunderbird_Hang_Stack]]* [[MailNews:Logging imap log]] file to bug, etc).if imap connections are shown

More technical ... if you can, please attach stacktrace file to bug using _hang_ instructions:* [https://developer.mozilla.org/En/How_to_get_a_stacktrace_for_a_bug_report How_to_get_a_stacktrace_for_a_bug_report]* [[Thunderbird:Testing:Get_A_Debug_Thunderbird_Hang_Stack]] Related bugs - see "shutdown hang" query at [[Thunderbird:Bug_Queries]] . Additional references: