Ours have come from several different lot numbers. I called in the pods and PDM again today. I asked about our issues and (of course) was told that there were no documented problems and that there was nothing for us to worry about. They are replacing the PDM again. That makes three replacements in the last four months. I completely agree that the biggest lesson we've learned was that having a backup pump is a very good thing. Otherwise, we'd be bouncing between MDI and pumping every time it happened. I am with you in hoping that these issues get resolved. That being said, I cannot ignore the fact that we are having so many problems and that we seem to not be alone. I'm also looking forward to the day when there are more tubeless pumps and more pumping options for all of us. Good luck to all of us.