[otrs] TicketDivider -- does it work?

Has anyone had any luck setting the 'TicketDivider' config option (in 1.2.1)? I just browsed through the code and it didn't seem to be getting used in the right places ;) Is this option available in preparation for a future implementation? I'm interested because I'd like to get around the Outlook auto-subject cleanup issue (this is mentioned in the user archives). In lieu of this option, what have other folks done? Or, is everyone just living with it? Thanks for your help :) -- Joe PS -- otrs rocks!