[CentOS] Frustration with yum

I suppose it's more of a frustration with myself, but can some kind soul 
please help me with the procedure to tell yum a package is in fact 
installed?  Here is the output from the command "yum update".

# yum update
Setting up Update Process
Setting up repositories
kbs-CentOS-Extras         100% |=========================|  951 B    00:00
kbs-CentOS-Misc           100% |=========================|  951 B    00:00
update                    100% |=========================|  951 B    00:00
rpmforge                  100% |=========================| 1.1 kB    00:00
base                      100% |=========================| 1.1 kB    00:00
addons                    100% |=========================|  951 B    00:00
extras                    100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package kernel-devel.i686 0:2.6.9-67.0.7.EL set to be installed
---> Package kernel.i686 0:2.6.9-67.0.7.EL set to be installed
---> Package tzdata.noarch 0:2007k-2.el4 set to be updated
---> Package krb5-devel.i386 0:1.3.4-54.el4_6.1 set to be updated
---> Package krb5-workstation.i386 0:1.3.4-54.el4_6.1 set to be updated
---> Package clamav-data.i386 0:0.88.2-2.el4.kb set to be updated
---> Package clamav-server.i386 0:0.88.2-2.el4.kb set to be updated
---> Package krb5-libs.i386 0:1.3.4-54.el4_6.1 set to be updated
---> Package kernel-hugemem-devel.i686 0:2.6.9-67.0.7.EL set to be updated
---> Package kernel-smp-devel.i686 0:2.6.9-67.0.7.EL set to be updated
---> Package lftp.i386 0:3.7.0-1.el4.rf set to be updated
---> Package evolution.i386 0:2.0.2-35.0.4.el4_6.1 set to be updated
--> Running transaction check
--> Processing Dependency: clamav-db = 0.92.1-1.el4.rf for package: clamav
--> Processing Dependency: clamav-lib = 0.88.2-2.el4.kb for package: 
clamav-server
--> Processing Dependency: libclamav.so.1 for package: clamav-server
--> Processing Dependency: clamd = 0.92.1-1.el4.rf for package: 
clamav-milter
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Package clamav-lib.i386 0:0.88.2-2.el4.kb set to be updated
--> Running transaction check
--> Processing Dependency: clamav-db = 0.92.1-1.el4.rf for package: clamav
--> Processing Dependency: clamd = 0.92.1-1.el4.rf for package: 
clamav-milter
--> Finished Dependency Resolution
Error: Missing Dependency: clamav-db = 0.92.1-1.el4.rf is needed by 
package clamav
Error: Missing Dependency: clamd = 0.92.1-1.el4.rf is needed by package 
clamav-milter


As you can see in the last two lines, clamav-db and clamd appear to be 
missing, but I assure you, clamav-milter and clamav as well as the 
database are here, and running quite well.  I even went so far as to do 
an erase of both, and both times, yum shows them as being installed. Of 
course I did not erase them, but if it finds them to be installed, why 
does it say they are missing during an update attempt?

I'm off the digest currently, so I can more quickly respond with further 
info if needed.

Thanks..

Sam