DrByte:
If the orders are actually in the database, in the orders table, but not showing in some screens, then the problem is definitely related to the orders_status setting being applied to the orders.
That's common when someone chooses a certain order-status inside a payment module, but then goes to Admin->Localization->Orders Status and deletes that option from the list. Thus a 0 is assigned when the order is completed, making it not match any of the appropriate values, and thus doesn't show up.
Hello, thank you for your reply :)
But I'm afraid this is not the problem. I have not touched the orders status settings, and the orders seems to get correct order status when they are placed.
This is a part of my main admin window :

I can change the status of these orders from the database as well.
All of my payment modules have "default" as "order status setting", except for paypal, where I'm using the recommended values.
Any other ideas, please? :)
:cry: