[PERDITION-USERS] tls_listen_force, perdition 1.17 on Ubuntu server 6.06LTS broken?

Hi. I'v been running perdition for quite some time now (3+ years) and have had almost no issues with it. Now the old debian sarge server running perdition is retiring and I have migrated perdition to a new server running Ubuntu Server 6.06LTS. The perdition versions is 1.17 on both servers and installed using aptitude and only using IMAP. I have a setup where I have two perdition config files, perdition.imap4s.conf is used for incoming SSL connections on port 993 perdition.imap4.conf is used for incoming TLS connections on port 143 plaintextlogins should not be allowed at all. The issue is with the perdition.imap4.conf setup: ssl_mode tls_listen,tls_listen_force does not work anymore, the server refuses to even start correctly (the process is started but when connecting to port 143 i am instantly disconnected). Full debug gives nothing. ssl_mode tls_listen_force does not work either, the server starts ok but it is still possible to do plaintextlogins and TLS is not working at all, just gets some message about mangling username, full debug gives some more lines in the log but I cant even see the username the client is sending even when using connectionlogging. ssl_mode tls_listen works but plaintextlogins are also allowed. Since it is the same version of perdition on both servers but behavior is quite different i guess this could have something to do with openssl? Any hints? /anders