OK so we are running Outlook 2010 on Exchange 2007, every now and then when one of the users updates a recurring meeting and sends the update it causes a reminder to be sent for every other occurrence of the meeting clogging up the attendees inbox's. I have put hours of research into this and looked all over the internet, the closest explanation i have found has to do with the meeting organizer using an iphone to send out the meeting or the updates but i know for a fact that in multiple of the cases I have run into that the person who created the meeting doesn't even own a smart phone. I have tried to replicate the problem but i can not seem to duplicate the circumstances. any ideas or suggestions would be appreciated.