That's not normal operation.

So ... um ... how about a bit more information:

- version of Zen Cart
- list of addons installed
- list of customizations made
- version of PHP
- version of MySQL
- do the customers show up in your admin?
- when your order is completed, you said it's sending out the confirmation email ... that should include a link to the order. What happens when you click on that?
- In the email, what does it say as the "Payment Method"?
- do the orders show up in your customers' My Account area?
- "where" in your Admin are you not seeing the orders? Just the home page, or on the actual orders list area?
- what are the order numbers assigned in the emails?
- you titled this thread "Linkpoint question" ... Do I assume that's because you're using Linkpoint as your only payment module?