iGreekNews HD 1.5.4. came out yesterday, and fixes all problems that iOS 5 users had. It also fixes facebook and twitter compatibility and adds minor enhancements to the fluidity of the UI. It is highly recommended for all users to update to the latest version.
Also, iGreekNews for iPhone is in the works, and will bring major bug fixes and new features to the successful application for iOS. Will require iOS 4.1+. Stay tuned!