I've never had duplicate orders in the 5 years I've run my store, as best I can remember. All of a sudden the last few days I get 3 duplicate orders, all different customers. The orders were all submitted 7 or 8 seconds apart.
One would think the customer was waiting for the page to respond after submitting and clicked it again, or double clicked the submit button. But they were 7, 7, and 8 seconds apart, strange coincidence. Orders were all paid via Paypal Website Payments Pro with unique transaction ids, so I void the second one.
Has anyone experienced this lately? I haven't changed anything in my checkout pages recently except for some code in the header of all pages that shows the number of items in the cart and a link to the cart.
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