@peterbeckwith:
Your issue would be unrelated to the glitch discussed above that happened briefly one day last August. All sellers using our system with Authorize.Net share the same back-end integration with Authorize.Net that's built-into our system, and since you are the only one reporting a problem at present, that indicates your issue must be with your own settings, whether in your Admin at our end, Authorize.Net's end, or with your Merchant Account at your bank.
The particular error you're seeing suggests a problem between Authorize.Net and the bank where you have your Merchant Account, rather than any issue between Authorize.Net and us. It appears we are already working with you on this matter via email, so we'll just continue the discussion there if necessary.
