Raising questions regarding the durability of the oleophobic coating on the glass screen of the iPhone 3GS, a user from Germany has posted pictures of the coating coming off less than three weeks after the product’s release. In separate postings to the apfeltalk.de forums, 3GS user “Samsas Traum” has shared pictures of his problematic screen, which appears to have ghost-like circles around the area where the coating has come off.…