Double orders

Double orders

Had this problem before.
I sometimes have orders double booked.
As you can see in the mail i receive the orders at the same minute (DO)
In admin you can only see the order once (DO1)
Unfortunately the order is booken minus from the inventory so stock levels aren't correct anymore.

Can't find out where the problem is coming from

do1.jpg

Aw: Double orders

Problem in internet, client click back, and click create new order.