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1 – Extract the .tar.bz2 file

2 – Enter gksudo nautilus in terminal

3 – Go to the folder /opt

4 – Copy & paste the Thunderbird file that you extracted to /opt

5 – Enter these commands into Terminal

Quote:

sudo -i

Enter your password if asked.

Quote:

cd /opt

Quote:

chown -R username filename

Obviously the username refers to you, and the filename to the file

6 – Go to System > Preferences > Main Menu

7 – In Main Menu, click on New Item

8 – In the Name field enter Mozilla Thunderbird Mail/News

9 – In the Command field enter /opt/thunderbird/thunderbird

10 – In the Comment field enter Mozilla Thunderbird Mail/News