Can't Add items to cart

Whenever I clicked on the Add To Cart button, a post back is called but nothing was added to the cart.  
Anyone got any idea?

I'm having the same problem.

The add to cart feature works on the Category page but not on the product details page. When clicking the Add to cart button the page just reloads.

I'm not sure where to start looking... anyone have any ideas?

May be start from breakpoint at the AddToCatr OnClick handler method? :)

Has this been resolved? I cant add to cart, login, register, wishlist or compare products but only in IE7 & 8. Firefox & Chrome work fine.