Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email email@example.com.
Reading through latest post I ve got a feeling those issue were solved. If I remember correctly You ll have to use proper country names ie: not united kingdom but instead gbr. As for shipping to US - all works.
Am I right?