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Join UsVersion 31.3.0, first offered to channel users on December 1, 2014
Disabled SSLv3
Security fixes can be found here
Fixes an issue where IRC participants were not removed from the display on leaving a channel.
Fixes an issue where using LDAP autocomplete could end up with blank entries in the compose addressing list (Bug 1045753)
Fixes a regression where Thunderbird wasn't respecting the skip integration option on the default client dialog.
Users of jp mac builds may have issues with no mail folders being displayed in the main window. Running Thunderbird in 32-bit mode temporarily will workaround this issue.
Installing extensions within Thunderbird requires download and installing as a file (bug 1081190)