According to the September gentoo newsletter, it’s time to replace tetex with texlive (whatever! :P).
WARNING: Unmerging tetex apparently killed my ability to spawn a new xterm?! Make sure you keep one (or more) running and do all this in one step! After completion, spawning xterms worked again.
emerge --unmerge -av tetex
rm /etc/texmf/texmf.d/00texmf.cnf
find /usr/bin -type l ! -xtype f ! -xtype d -ok rm -f {} \;
rm -rf /var/lib/texmf/web2c
emerge -Davu texlive
(33 packages - partly because of my previous FF3 unmasks...)