Can't change countries in App Store
I changed my Apple ID from United States to Canada and now I have purchases in both countries. However I can't find a way to switch between the different countries' stores. The FAQ and some forum posts I've seen refer to a flag that is supposed to be in the lower right of the App Store that you can click on to change the country of the store, but it doesn't seem to be there.
iPad 2, iOS 5.1