So I've owned a Lumia 920 and now I have a Lumia 620. When plugged into the computer, both phones were disconnecting and reconnecting every 30 seconds or so, making it nearly impossible to sync music to the device. I'm now on a Windows 8 PC and still having this issue. Is this a driver issue? I'm surprised that my Windows 8 and Windows Phone 8 device is having such difficulty connecting to one another.