Imported From: http://groups.google.com/group/in-portal-bugs/browse_thread/thread/81396b01dea753a4#
Hi guys,
while playing with 520, I just found this problem:
1. add a tangible product to cart
2. add the same product again > quantity change to 2
2bis. OR instead of adding another product, when in cart, change quantity and update cart
3. click on "proceed to checkout", you are redirected back to cart instead of billing/shipping step, with "Warning: Items quantites and/or order types in you cart have been updated. Please review the changes below before proceeding." message
p