Since upgrading my iPad 2 to iOS 6.1, I am not able to open ePub files via Safari. When I try to download an ePub file from Safari, it will show the ‘downloading’ message until the file gets downloaded completely. Once the downloading process is finished, Safari will close the tab by itself without opening the file. I need to go to Safari history and tap on the ePub link for opening the downloaded file. What could be the reason behind this issue?