[Dovecot] Multiple Logins on same accounts from different stations, RE-POSTING

Sorry List, I am reposting with dovecot -n

Hi, all I've recently upgraded to 2.1.16 and found my self in deep ....

There are 4 accounts in my setup that need to be accessed simultaneously by 5-6 PCs on a local lan.

The thing is if a user A updates, deletes, flags mail messages in the imap folders the changes don't get propagated to the other mail clients.

To state this clearly, PC (A) thunderbird has an account SALES, Maildir etc PC (B) thunderbird also has the SALES account.

Changes from PC (A) and vice-versa like marks,deletes, or moves mails around will randomly get propagated to PC (B) Sometimes they do sometimes they don't. This never occured with previous version 1.2.xx

I am attaching my doveconf -a output .. Please Help, Thanks in advance Harry

Thanks