I was upgrading a system remotely from Centos 6.3 to 6.5 via VNC. Now the system will not boot. Or at least without bringing up the console and switching to the older kernel. The last messages I see in /var/log/messages are: Jul 1 14:53:51 rigel yum[3220]: Updated: scl-utils-20120927-8.el6.i686 Jul 1 14:53:53 rigel gnome-keyring-daemon[2710]: dbus failure unregistering from session: Connection is closed Jul 1 14:53:53 rigel gnome-keyring-daemon[2710]: dbus failure unregistering from session: Connection is closed Jul 1 14:53:54 rigel gnome-keyring-daemon[2822]: dbus failure unregistering from session: Connection is closed Jul 1 14:53:54 rigel gnome-keyring-daemon[2822]: dbus failure unregistering from session: Connection is closed yum update reports 'No Packages marked for Update'. How do I trouble shoot this? I am assuming that I only got a partially completed update.