whenever i open app store it shows i have no updates available, even though i read all the time about new updates for enigmo, vay, and others but they never show up. i really dont want to have to delete and re-install every app just to see if it was updated. and sometimes when i open the app store it shows a 2 or 3 number icon indicator to show i have updates that need to be installed, but as soon as it finishes loading they go away. How can i fix this!!