Problem with the Taxes

[fabiope]

Hy all,
I am using PRESTASHOP 1.0.0.8
I have some problems with the view of the taxes (in the list of products and in the detail).
In my site the taxes are enable and they're associate to every product (they aren't associated to the state-address)

Next my scenerie:
1. The customer open the site - > it comes only shown the price without taxes
2. The customer carries out LOGIN - > as before, it comes only shown the price without taxes
3. The customer begin the procedure of Purchase - > now, the sites load the taxes in the context and in the next navigation the customer will see the taxes correctly

Studing just a little I have uncovered that in the loading of the STEP 1 (visualization of the addresses) of the purchase (function displayAddress () of ORDER.PHP) it calls a function with the following the 3 lines of code that load in the context the taxes information
/* Update cart addresses only if needed *
if (isset ($update) $update AND)
$cart-> update ();

I thought that the taxes associate to the product are shown always? Also with not Logged user?
Can Anyone help me?