Rumors about Kate Middleton are spreading like wildfire as online sleuths perpetuate theories about her whereabouts as she recovers from abdominal surgery. While many of the claims are baseless, one, in particular, alleged the BBC was on notice and ready to pull the trigger with an impending announcement by the Royal Family any day now; however, it appears that isn’t true either, RadarOnline.com has learned. As this outlet reported, the Where’s Kate saga hit a new high on Monday after a grainy video appeared to show a smiling Middleton with her husband, Prince William, at Windsor Farm Shop ove…