Hmm. Found one interesting thing. Last night at home, I happened to look at my Bluetooth settings on the Epic and it said it was connected to my car. Which is odd because car was turned off, outside and the driveway is at the far end of the house, plus when I've checked before from the same room it's always been disconnected.
This might account for the problems I've had previously, where I get into the car and the car won't connect. Generally when I get that message and check the Epic, it says it *is* connected on its end. So I'm wondering if what's happened before is that the Epic stayed "connected" after I left the car, which screwed up the synching or whatever it is that they do, when I returned.