If you are experiencing problems with streaming video on your Apple TV, you may want to take a closer look at your DNS settings, according to Mac developer Joe Maller. Maller recently rented an HD video via iTunes and was astonished to discover it would take two hours to download over a reasonably fast 15-20 MBps Internet connection. Maller searched for an explanation and stumbled upon other users who were reporting the same problem while streaming rentals. According to Maller, the problem occurs when you change your DNS settings from your ISP to a third-party like OpenDNS or GoogleDNS. When
