max_user_connections error

[NeoID]

First of all, you guys are doing a great job...
After I setup the latest stable release on my web server I tried to login with no errors.
I'm currently using only one database that contains the tables for a phpbb, a gallery and the webmail.
I had no serious problems, but after some playing around the webmail became more and more unstable.
Sometimes I'm getting the "SERVICE CURRENTLY NOT AVAILABLE!" error while browsing and when I switched over to my board or gallery I got the message; "Can't connect to database...max_user_connections".

After I removed the webmail from my server everything was fine after a short period of downtime (I couldn't even access phpmyadmin at that time).
Does anyone else have this kind of problems?