About two days ago the calendars on my Hero became blank. I ran a sync manually, I went into Google on my laptop to make sure the calendar was still there, I power cycled the phone, but nothing helped. I added one new item to the google calendar via laptop, and it does show up on the phone's calendar. But only that one event. All the other events still do not sync. I have had the Hero for a year and a half and have never had this issue before. Anyone have ideas about how I can get the calendar to begin syncing again?