we have booked an own url (domain) for our skin and media datas and we use Magento 184.108.40.206 (pls note: it is NOT a sud-domain. It is a stand alone domain with his one URL)
If we write in the System / Configuration / Web the different URL for the Base Media and Base Skin we have the follow problem:
Magento search the base and skin not at skin / default / theme -where it is present. Magento have always a look at skin / base. And as this would be not enough problems Magento shown all slider images and other images very fine if i write the new URL inside there. But product pictures would not be shown.