Donc ne cherchez pas 10 ans à utiliser les vieilles versions de Ligthing etc., il faut juste taper ceci dans votre shell :

$ su
# yum install thunderbird-lightning

Par contre il semblerait que sous FC15 ça ait changé, mais là je ne peux pas vous en dire plus .

Et sinon en passant, si vous voulez synchroniser Thunderbird avec Google Calendar, suivez la procédure indiquée chez TechIECorner concernant Provider for Google Calendar.

————————————– English Readers, you start here ! ——————————–

Small tip, but this could allow you to save a bit of time : it seems there is no way installing Lightning (calendar for Thunderbird) from the official Mozzila website (using a .xpi file) in Thunderbird. Nop, you should install a package instead.

So, avoid trying to use older version during half a day, just type that in your shell :

$ su
# yum install thunderbird-lightning

However, it seems under FC15 the procedure changed and there is no package called like that anymore… Well, I can’t tell you more about that, try Fedora officiel forums if you don’t find the package.

By the way, if you want to synchronize Thunderbird with you Google Calendar, you can follow the steps explained at TechIECorner about Provider for Google Calendar.