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wot saturnia dnja Dec. 11, 2009 · trajny wotkaz

Very useful add-on indeed. I use it since a long time.
Unfortunately, it's not compatible with Thunderbird 3.0.
It can be installed normally but there is an error message when clicking on the "options" button:

Erreur d'analyse XML : entité non définie
Emplacement : chrome://folderpane/content/folderpanePref.xul
Numéro de ligne 255, Colonne 19 :