Thanks, you guys, I have some maps in now at least.
I turned off autodownload, went to Maps -> Manage Maps -> Zoom. I centered as close to NM as I could, unchecked level 15 at zoom and checked level 10. I tried deleting maps, but still can't. My cache is in the memory card, at /media/mmc1/Maps. I checked, and there are a number of directories there, including level 10. I can't get anything from level 10 to display. What should I do? I downloaded about 26M of maps.

Thanks!