2010/1/23 Matthew Saltzman mjs@clemson.edu:
$ pdflatex simple.tex This is pdfTeX, Version 3.1415926-1.40.10 (Web2C 2009)
kpathsea: Running mktexfmt pdflatex.fmt I can't find the format file `pdflatex.fmt'!
In a slightly related issue, I found that after I did the most recent updates from texlive (yesterday), xelatex and bibtex segfaulted immediately. "yum reinstall texlive-xetex* texlive-bibtex*" seems to have fixed it though ...
MEF