getting 2 different kernel-headers when I try to install kernel-headers

yum list updates only lists one kernel-header, the
one for 2.6.22.4-65.fc7.

However when I try to install, I get two kernel-headers
kernel-headers.i386 0:2.6.21-1.3194.fc7
kernel-headers.i386 0:2.6.22.4-65.fc7

# yum list updates
kernel-headers.i386                      2.6.22.4-65.fc7        updates

# yum install kernel-headers.i386
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package kernel-headers.i386 0:2.6.21-1.3194.fc7 set to be updated
---> Package kernel-headers.i386 0:2.6.22.4-65.fc7 set to be updated

Dependencies Resolved

=============================================================================
 Package         Arch    Version          Repository   Size
=============================================================================
Installing:
 kernel-headers  i386    2.6.21-1.3194.fc7  fedora     658 k
 kernel-headers  i386    2.6.22.4-65.fc7  updates      658 k

Transaction Summary
=============================================================================
Install      2 Package(s)
Update       0 Package(s)
Remove       0 Package(s)

Total download size: 1.3 M
Is this ok [y/N]: y
Downloading Packages:

Running rpm_check_debug
--> Populating transaction set with selected packages. Please wait.
---> Package kernel-headers.i386 0:2.6.21-1.3194.fc7 set to be installed
---> Package kernel-headers.i386 0:2.6.22.4-65.fc7 set to be installed
Running Transaction Test
Finished Transaction Test


Transaction Check Error:

Error Summary
-------------

How can I get kernel-headers.i386 0:2.6.21-1.3194.fc7
to not get listed or to be installed. It seems one
would overwrite the other. Though this still doesn't
fix the "Transaction Check Error" problem.

Darlene Wallach