UPS Shipping Module doesn't calculate correctly when adding 2 of the same items.

[xstortionist]

The problem I'm having is when we add 2 of the same items to our shipping cart and then go to checkout, the price is the same as if there were only 1 items in your cart of the same item. Sometimes when there are 2 items of different products it will also display the same shipping rate.

Has anyone find a fix for this issue?

[lowmips]

What is the product weight? If it's very small, the price could be the same for 1 or 2.