Recently I've begun noticing calendar events or tasks that I had previously set up, and had been that way for several years, have begun disappearing from the calendar. Just today, events that were there two days ago, were gone today. This has happened at least 10 or more times in the last month or so, maybe longer. Each time I notice they are missing, I create a new event to replace the missing event. It's gotten to the point I can't trust that the calendar is accurate at providing reminders. Anyone got an answer that I just haven't found?