fedora 9 would not just install it's self , you would have needed to do some extraordinary measures to do that
maybe you mistakenly turned on the fedora.testing repo
run as root
Code:
su -
yum repolist
-- output --
fedora Fedora 8 - i386 enabled
livna Livna for Fedora Core 8 - i386 - Base enabled
updates Fedora 8 - i386 - Updates enabled
"fedora-development.repo" should NOT be listed
nor should "fedora-updates-testing.repo"
if they are give this a try
Code:
yum list installed | grep fc9
and remove all fc9 rpm's then reinstall the fedora 8 ones
but if 8 and 9 are mixed then it may be imposable to fix