UILocalNotification not cancelling after firing

My application generates multiple local notifications and while I'm testing it,开发者_JS百科 I see that the app continuously receives the local notification appDelegate message. This is in spite of my having no repeat interval.

<UIConcreteLocalNotification: 0x1574b0>{fire date = (null), time zone = (null), repeat interval = 0, next fire date = 2011-09-23 19:40:35 +0000}

This is the debug value returned at my breakpoint. As you'll notice, there is no data except the next fire date, which shouldn't technically be called because there is no interval. Also, this is the only notification in the SharedApplication LocalNotifications array.