[Users] dialog module configuration question

Hello, I have a question on how to configure the dialog module ( 1.2.x from cvs yesterday ). With my config, ( attached) I can make calls and have verified that the acc module is working correctly. My question is, when I enable the dialog module, I can see that it is incrementing call count correctly, but when a bye is received, the dialog:active_dialogs statistic is never decremented. In the debug level 9 logs, ( also attached) I see this error after the 200OK is sent to the bye: 1(969) DBUG:dialog:unref_dlg: unref dlg 0xa7ce5a98 with 1 (delete=0)-> 1 Is this a case of one of the timers being set too short? by the way using a variable call length from well under a second ( using sipp ) to 20 second call doesnt' seem to make a difference . Thanks, Andy