When upgrading from 5.2 to 6.0, all (la)tex packages are marked as installed, but instead of being installed, only emptyness is found... :( So when upgraded run the following: rpm --verify -a to check everything for consistency. I personally did not bother to do much about it. I just rpm -e the tex bunch, and rpm -i the whole bunch again. It only appears to behave like that with latex (witnissed to 5.2 version -> 6.0, exactly the same results)
Oops: reported and resolved in #2727
*** This bug has been marked as a duplicate of 2727 ***