[otrs] NewTicket notifications and FAQ approval

Hi, I've just configured FAQ approval new functionnality and I'm facing a first problem : when a new FAQ article is added, a new ticket is generated by the system into the configured FAQ_Approval queue requesting approval of the FAQ article BUT there is no NewTicket notification sent to agents even with queue selected in MyQueues and New Ticket notifications set to yes for Agent preferences ?? Why ? Thanks for your answer. Laurent MINOST