However, I'd still like to figure out why this stopped working all of the sudden
the upgrade maybe ?
to check how many fedora 13 rpms are still installed
yumex can NOT DO THIS
in the terminal
rpm -qa | grep fc13
if that list is longer that 3 to 6 fedora 13 rpms ( the normal amount)
install the yum-utilities plugin and use the --orphans option
see "yum-utilities --help "
then uninstall the remaining