That would be my guess. Did you verify that MB is now updating at 5 minutes by checking the logs or the status screen in the web interface? Maybe it is still updating every 30 seconds? Another place that may cause these extra dots is the Rapid Fire protocol has a variable for how frequently you are sending updates. If MB is telling it that you're sending every 30 seconds even when you are not, it might cause WU's graph algorithm to interpolate the missing spaces. but still put dots in. Just grasping at straws at this point, since the WU data looked good through the web site.....