Okay, this is by no means an authoritative answer here, but from looking around, the ticket module has been superseded by the new-ticket module which is closely integrated with the BITS Setup (Bug and Incident Tracking System).
The only thing to note with new-ticket is that you should first setup a team in /team otherwise you will get Server Error pages loaded in your browser. I think Ben is still working on the BITS portion prior to offical release of the openACS system.
Cheers
