By user9148476 on Jan 22, 2010
After the upgrade worked, I found 6905518 which shines some light on the problem. The 'TrueType' directory becomes a symlink to /usr/share/fonts/TrueType. So I plopped my fonts in their new location post-upgrade and all is well.
Happened upon image-update of b131 stops when ttf-fonts-core extra package is installed and sure enough my 'extra' repo wasn't active. Off to update my keys and certificates for 'extra'.