I have a weird problem with my 9900. When I press an icon lets say the speaker settings or mail app, it takes 2-3 seconds for the app/pop-up to show. If I tap it again right away it shows instantly. I managed to fix this by reinstalling the OS but the problem started appearing after a couple of days. Refreshed it again solving the problem and now it's back again after a week. Any ideas on how to fix this annoying bug? or do I just wait for another OS?