Quote Originally Posted by capnhairdo View Post
Hope this fix did become a priority and was implemented in 1.3.9.
Not to speak for the good doctor, but I do believe you misunderstood what he meant when he stated "It's really not high on my list of priorities of things to "fix" "..

It's likely he meant that it was not a priority to fix thin in v1.3.8a since v1.3.9 was the thrust of the Zen developers focus and the issue would be addressed in THAT release... DrByte can of course confirm my interpretation.. this is how I took his words..

Given that DrBtye also stated that this was addressed in Zen Cart 1.3.9:
Or just add a distinct index on orders.customers_id to improve performance considerably. (v1.3.9 does this during the upgrade):
and as gilby posted it WAS addressed in v1.3.9, it seems that the thing to do to correct your situation is to upgrade your 1.3.8a shop to the latest version of Zen Cart (v1.3.9h as of this post) or apply the changes posted (as it appears you have done)