[Dovecot] severe problem

[Ewald Geschwinde]

I have debian knoppix and postfix + dovecot imap

My problem is the following:

Feb 29 18:51:14 cybserv imap-login: Login: xx at xxx.xx [xx.xx.xx.xx]
Feb 29 18:51:14 cybserv dovecot: child 13959 (imap) killed with signal 11
Feb 29 18:52:41 cybserv imap-login: Disconnected [xx.xxx.xx.xx]
Feb 29 18:52:41 cybserv dovecot: child 13952 (login) killed with signal 11


I'm using the debian package for the version 0.99.10.4-2

Always when someone tries to login the server throws this error

I don't know whats going wrong

I'm using a postgresql backend

Regards Ewald Geschwinde