[Dovecot] Weird RC6 trash problem

[Marc Perkel]

Noticed an occasional strange problem that appeared after upgrading to 
RC6. Using Thunderbird on XP I empty the trash and everything in trash 
folder vanishes. But then it reappears in the message totals. But if I 
actually click on the folder there's nothing there. Not sure if this is 
an RC6 bug but I thought I'd mention it just in case.