It is the computer I was using, my linux laptop here at home works OK. I have no idea what would cause images on just this site to not come through - if it's a "security setting" or some kind of "filtering" by the corporate ISP/firewall. It's the first/only site I've noticed this, everything else I do online seems to be OK. So in the words of Emily Litella - "Never mind", sorry to sound the alarm.
Mark K5LXP
Albuquerque, NM