Ok I can not find this anywhere else so if it is I appologize but we have found a serious issue with Virtuemart 2. When using Internet Explorer when you add more than one product it changed the price of all of the products to the most current item added. As you can imagine this is very bad and very serious. I am unsure how to fix this so I hope someone has a solution for this. You can see it in action on either of these sites www.vinmaps.com, and www.chriscountryessence.com. Also both are running different templates so its not the template.
UPDATE: after some digging we have actualy determined it is an issue with 2 3rd party addons javascript. So sorry not a virtuemart issue.