LG :: VX8360 Creepy Calandar Event

My friend has a VX8360, and a random calandar event has been coming up on it. The event name is ÿÿÿÿÿÿÿÿÿÿÿ and its for many many years in the future. Notice the weird time also. The alarm sound is the verizon default tone rather than her default alarm sound. It only happens exactly 5 minutes after she deletes one of her own events that has just gone off. I tried editing the date of the event, but the phone resets itself. It's really creepy. Also, the event is nowhere to be found in the calandar, seeing as it only goes up to the year 2100.