Ok, it doesn't help anything. And it isn't that the services are not in use. As i saw in the debug mode, the services go down, when they are sending the databases to the mysql-server... i think this process is NOT running in background, so the services get a ping timeout, when updating the databases.
Why i believe in this theory:
The last 3 times the services crashed was when updating the databases and the server having a high load because of other processes. Then the update of the dbs needs a long time (the services are not reachable in irc at this time, though they are online). After the services exceed the ping time of the server class, they went offline with the no response arrow some posts above.
So can the developers please fix this issue in the next version? It would be a great help!