Does anyone else experience this issue??

Whenever I set an alarm for an event using ksdatebook or the built-in calendar I end up getting two identical alarm notifications; one from each program. I know with datebk5 (700+ Kb for a calendar/datebook?!?!!!! - get real; too bloated) there is an option to allow datebk5 itself to handle all alarms. When enabled it prevents the built-in calendar from bringing up duplicates of alarms. Is there any way to replicated this behavior with ksdatebook?