I have been dealing with this issue for quite a while. I thought i fixed it but it is happening again so I finally decided to post about it.
I have set up a CD/Mixtape store, and all the products show up perfectly fine, customers are able to add to cart, proceed to checkout, but when they add their details for shipping and billing, and they click on proceed to confirmation, they seem to get stuck on that page and not proceed to confirm the details.
The interesting thing is that it works fine once, and then it wont work well for a while.
Any ideas as to what the problem might be?
The url to the site is: http://numixtapes.com