129. Thunderbird 12.01 on debian

First build thunderbird
wget ftp://ftp.mozilla.org/pub/mozilla.org/thunderbird/releases/12.0.1/source/thunderbird-12.0.1.source.tar.bz2

Install dependencies
sudo apt-get install libdbus-glib-1-dev gir1.2-notify-0.7 libnotify-dev yasm checkinstall libzip-dev zip 

Remove the previous version and make sure that there's no existing comm-release directory
rm comm-release/ -rf
tar -xvf thunderbird-12.0.1.source.tar.bz2
cd comm-release/
./configure --disable-necko-wifi

The next step will take a little while (30-60 minutes on a slow computer)
make

And then install
sudo make install

Then install add-ons:
Lightning 1.4  (Sunbird is being discontinued)
Provider  for Google Calendar 0.9 (otherwise you won't be able to dismiss calendar reminders)
Engimail 1.4.1 (see http://verahill.blogspot.com.au/2012/05/encrypting-your-email-chat-and-phone-in.html)