[Dovecot] Lost transaction log file in alpha2

[James Berry]

I had run alpha1 pretty uneventfully for several weeks. I upgraded to  
alpha2 a couple of days ago and have since suffered two incidents of  
"Lost transaction log", resulting in the client being unable to  
access the mailbox until I "rm dovecot.index.log*"

Sep 14 10:48:35 caddy dovecot: imap(jberry): Lost transaction log  
file /Users/jberry/Maildir/dovecot.index.log seq 1

I should point out that this is a server with a single imap user  
(myself) and that I know only one imap client was trying to access  
the server at that point in time (though the client sw Mail.app may  
have had multiple connections to the server).

Any suggestions/ideas/thoughts on whether something might have  
changed in alpha2 to start causing this?

James.