[CentOS] yum list updates error (Manish Kathuria)

There was no proxy in the file /etc/yum.conf. I specified the proxy setting
and now "yum list updates" is working. A part of the output was:
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.01link.hk
 * updates: centos.01link.hk
 * addons: centos.01link.hk
 * extras: centos.01link.hk
Updated Packages
ImageMagick.i386                     6.2.8.0-4.el5_5.2
updates
ImageMagick.x86_64                   6.2.8.0-4.el5_5.2
updates
NetworkManager.i386                  1:0.7.0-10.el5_5.1         updates

Its written Updated Packages. Does this mean it has already updated? I
thought that this command displays packages that need to be updated.
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