So I installed iOS6; got on my iPad; opened the App Store -- it was in Korean!?!?! Anyway, I figured out how and why this happened immediately -- when you enable the location service, it reads your IP address; I'm in Korea, so of course, the Korean App Store came up immediately. If you go into Settings --> iTunes & App Stores --> Click on your Apple ID --> Sign Out --> Click on the blank Apple ID --> Sign In. Now the App Store will be in whatever store you normally use. The screen shots with this post will help you get through the process.