I currently have the latest zimbra desktop software installed (2.0.1) which i upgraded from 2.0 on a windows 7 professional 64bit edition.
I have set up my gmail account with the zimbra desktop software and i noticed that every mail that syncs from gmail to zimbra automatically becomes a conversation.
The odd thing is i have checked my gmail account and all i receive are single e-mails. What more unusual is when zimbra gets the mail from gmail its starts off as a single e-mail and later becomes a conversation and all of them have 2 mails.
Below is a screenshot of my problem.