I don't know why, and I can't seem to find anyone with the same problem. I can delete single events. But reoccurring events I cannot delete. I can choose to delete a reoccurring event from just ONE day, but when I select the "Delete All Future Events" button, it acts like it's going to delete it via going back to the calendar screen, then the little circling hashmarks that show the phone is thinking (whatever that's called, up in the top left next to the 3G/WiFi logo) spins for about 3-4 minutes. Once they go away, the event is still there. Anyone else having this problem? I'm hoping when the next iOS comes out it will take care of this for me.