I just bought a Delorme Earthmate PN-40 and so far, my impressions have not been favorable. Yesterday, after many tries finally got it to download caches to the unit, then found out I was running F/W 2.6 and needed to update to Version 2.8. Well, today, I updated to V 2.8 and it erased the caches that I had downloaded. When I tried to RE-DOWNLOAD yesterday's caches, I get an error message that says "Waypoint Indexing Problem". I've tried turning off the GPS (which I couldn't do yesterday) and restarting, trying different UBS ports, refreshing the geocaching info. Right now, I'm really at a loss and am ready to send this thing back and go back to my reliable OLD Garmin eTrex Summit. Any ideas out there about what is going on with this thing? Thanks!