a) added a new lobe. Rather than everybody being lumped together in a tangled mess, there's now a bunch of people off to the right in a looser cluster
b) scaled so small that the font sizes went negative and names became dissociated with their nodes, and show up in the default font. Go go gadget GraphViz.
edit: I think I've found the current farthest-from-me person in the system, kyphi5, with three people between us.
http://www.martian.cx/other/6dgraph.200605012200.gif 277k, 4815x3772px.
http://www.martian.cx/other/6dgraph.200605012200.small.jpg 57k, 1000x783px. (apparently, the larger one doesn't always display properly for other folk)