I am running 1.39h, Authorize.net is the gateway (AIM)(authorize+capture)(PHP 5.2.17). I have had a couple of instances in the past 2-3 weeks where the customer is being charged multiple times when ordering. The charges are close together and each generates a separate order ID number. However, I am only receiving one of the emails from Zen Cart. If I go to my admin section the other transactions do show up. I upgraded on (Nov-11) and have not had any problem until now. I am receiving the emails from Authorize.net and that's how I noticed the problem. Does anyone know how to correct this?