Basis some requests from the gphoto2 community, I have struggled to go one step further and compile newer versions of 'libgphoto2' (2.4.0.4) and 'gphoto2' (2.4.0.1) from the SVN 'trunk' directory (heck, there is a first time for everything!). Of course, new challenges occured (nothing is every easy!). I updated my README and tar.gz files accordingly:

http://members.shaw.ca/dmenns2/README.libgphoto2.dare
http://members.shaw.ca/dmenns2/README.gphoto2.dare
http://members.shaw.ca/dmenns2/libgphoto2.tar.gz
http://members.shaw.ca/dmenns2/gphoto2.tar.gz

Nope, this does NOT appear to improve my success using this tool i.e. reboots still occur with my N800. Also, although I *think* I was able to '--capture-image' with my Coolpix 4300, I am no longer able to do so. My Coolpix 4500 does capture, but has other problems.