I am seeing a strange problem with my organizations master SharePoint calendar. Every 2 to 3 weeks ALL the events will show that they have been modified by the same person. When I talk to these certain people, they say that they have not been on the calendar page for days. It is only 3 or 4 people out of the organization that show up as modifiers. All of them have their outlook calendars synced with the SharePoint calendar, so I can't help but think it is something on their clients. I appreciate any suggestions.