Assegnate 5 su 5 stelle

Hello,
Nostalgy is a verry useful addon for Thunderbird.
But sometime, it is verry slow. It can take one minute or more to move a message from a folder to an other.
Did anyboby already experienced that ? Have you any explanation for that ?
Many thanks in advance

Questa recensione riguarda una versione precedente (0.2.20) del componente aggiuntivo.