OK
a) You are logged on as root??
b) make a directory off root called work/update4 (gives a folder where all applied updates are kept so you know whats been installed) and move all RPM updates there (use Midnight Commander if uncommfortable at the prompt).
c) run rpm -Uvh --replacepkgs *
d) if routine gets 'stuck' ctrl/c out and run rpm -Uvh --replacepkgs samba*.rpm - assuming this works rerun step (c) to completion.
e) if this still fails then make a note of those packages that have installed and install those that haven't one by one, checking for errors
assuming all installed then
f) execute /sbin/etc/signal-event post-upgrade
g execute /sbin/etc/signal-event reboot
Take a look at
http://forums.contribs.org/index.php?topic=17501.msg68155#msg68155as a way of displaying the update version in the server manager and at the login prompt as part of the motd (message of the day)
HTH