If the whole sheet is double exposed, then the counter must not be working, and you're taking extra shots.
It would sure look that way, but all my counters are working well, and generally one would think six isn't a very hard number to count to in your head the only thing I can think for that 6+1 double exposure, is that I must have somehow thumbed the counter dial back around to 6 when it was on X. As for the multiple exposures on #2, I still have no way of explaining that... I was confident I only took the 6 shots on that back, I could forgive myself for trying to sneak a 7th in, the last couple shots were in a fairly quick sequence, trying to get the model's hair just right with the fans, but definitely not any more than that... hmmm, puzzling...
My goal in life, is to be as good a person as my dog already thinks I am.