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it`s alway eat my memory and let thunderbird crash...

Questa recensione riguarda una versione precedente (2.0.13) del componente aggiuntivo. 

When the add-on is slow or uses a lot of memory it's generally caused by the fragile database format used by the Thunderbird address book, or more rarely by interference of a security program. It's generally best to delete the offending address book and re-sync with a new one when this happens.