Marketpress + W3 Total Cache - Almost There

Hi,
I'm currently using Marketpress with Super Cache, but I'm doing some tests because I want to switch to w3 Total Cache.

Everything is fine, except for one thing.

When I place a new order in the store the order shows up "emtpy": no products, no contact information for the customer, only the totals appears.

This happens even when I'm logged in.
I think it's a w3 configuration problem, any advice on how I can fix it?

Thanks!