I'm using my Google Calendar to push 5 calendars to my iPhone (3.0) with the ActiveSync / Exchange system, but I'm not convinced of the actual "push" going on here. If I'm staring at the Calendar app on the iPhone, I see the changes take place almost immediately. If I create an event with an alarm reminder, it goes off on my phone. But if I DON'T have the Calendar app open and I make a change, I'm not sure that it gets pushed to my phone... when I make a test event 10 minutes away with an alarm reminder and never open the app, my phone never notifies me of the event. Has anyone else had this same experience? Any suggestions? What's the point of push calendar changes if it only works while you're looking at the Calendar app?