I had this issue with both the original Jawbone and the Jawbone II with a Curve and a Bold. It seemed to drop the connection every time I received an email. It was absolutely maddening. I replaced the Jawbone with a BlueAnt Z9i, which is great. But when the Jawbone II came out, I tried that. Same problem. Back to the Z9i. Noise cancelation is probably not as good as the Jawbones, but the sound quality is superior AND, no more dropped connections.