kolab-saslauthd crashes

Greetings,

Out of nowhere, users on one of my Kolab 3 servers stopped being able 
to login. I managed to figure out that it has something to do with the 
kolab-saslauthd service from the roundcube logs. Restarting the 
kolab-saslauthd service seems to temporarily fix the problem but I've 
been unable to find the cause.

My investigation have brought up two questions:
1. Where are the logs for the kolab-saslauthd service located?
2. The /var/log/messages log file get 2 of these errors every minute. 
Could this have something to do with the problem?
imap[24259]: unable to open Berkeley db /etc/sasldb2: No such file or 
directory

Anyone else running into these problems?

-- 
Mat