I have been having an odd issue with my messaging on my iPhone4 (4.2.1). Whenever I go back from a contact's message stream (fig.1) to my Messages screen (fig.2) the keyboard stays erected. It stays covering half the screen and means I cannot scroll or view separate message streams easily. Naturally I hit the home button and reopen the messages app. The keyboard is gone but the typing field remains (fig.3). I can either exit and re-enter again or go hit the "new message" button in the top right corner and cancel that to get the screen back to normal. Is anyone else having this problem? It's really annoying and I'd like to clear it up, if there is a way.