Windows Phone 7 devices sending massive "chunks of data" over 3G for no apparent reason

Windows Phone 7 devices sending massive "chunks of data" over 3G for no apparent reason: "Count this one in the strange category and WP7 bug backlog. It appears that there may be a little bug in Windows Phone 7 that is sending out random "chunks of data" over AT&T 3G even when the device was...