As soon as I read your post Larry&Wesley it reminded me of an outing on Saturday. I drove from San Antonio to Atascosa County to do some maintenance out on the hunting property. I tried a new route my Garmin V suggested and it seemed to do fine... this was around 11:30 am when I got to my stop. No problems using the Auto-route.
When I was packing a few things for the chores; feed, game camera...I fired up the Explorist 500 so that I could mark some waypoints. I noticed that it took an unusually long time to lock on. I thought it might be because I had travelled 20 or so miles from the last time I had it on. After it "locked on" I went about my chores, no problems...this was about 1 pm. As I left the area, I left the Explorist on as I wanted to track the new route back to the house. I am running the Topo 3D and wanted to see it in 3D on the PC! The 500 did display the hourglass twice along the route which was mostly farmland. This was about 1:15 to 2 pm .
This was unusuall for the Explorist as it seemed to work great the rest of the day. I even motored about town in another vehicle later in the day and no problems. Hope everything settled down for you and yours.