For both GPS and Auto-Download: timeouts. After a certain amount of time searching for a GPS unit and not finding one (2 minutes?) it should simply stop searching until the user re-initiates the search. For auto-download if the user is prompted for a connection and clicks cancel either it should stop attempting to download immediately or timeout after a certain time and reinitiate either when the user connects to a network or if the initiate another download attempt.

Another idea that came to mind for easier access to some of the menu options (primarily auto-download and GPS, which the timeout function would solve anyway) is to have the bottom 20-pixels-ish of the screen have 5 or 6 buttons. Small, white, semitransparent icons with vertical white dividers and no background. Clickable over their entire height and width. Keeps as much of the map visible as possible, while providing fast access to some of the buried menu functions. Maybe even a drop-down (or up, in this case) menu to select repositories. I was planning on putting together a mock-up, but hopefully my description will suffice.