Has anyone been having issues with the handoff between 3G and WiFi? I always leave my WiFi on. When I pull my Xoom out at home, it automatically connects to my network. When I pull it out at work, it's automatically connected to 3G service. No problems. My coworker also has a Xoom but doesn't experience a smooth hand off. When he gets to the office, when device reports no connection. He has to toggle airplane mode for it to connect to 3G. I've never experienced this on any Android device I've owned. However, I've read anecdotes from a wide variety of Android device owners that have experienced this. This leads me to believe that it is more of an Android or software-related issue than anything else. Any insight as to what causes this?