root@woof [/boot]# rpm -qa |grep kernel
kernel-smp-devel-2.6.9-42.0.3.EL
kernel-utils-2.4-13.1.83
kernel-2.6.9-22.EL
kernel-hugemem-devel-2.6.9-42.0.3.EL
kernel-smp-2.6.9-42.0.3.EL
kernel-devel-2.6.9-42.0.3.EL
kernel-smp-2.6.9-22.EL
root@woof [/boot]# yum remove kernel-smp-2.6.9-42.0.3.EL  kernel-devel-2.6.9-42.0.3.EL kernel-hugemem-devel-2.6.9-42.0.3.EL  kernel-smp-devel-2.6.9-42.0.3.EL
Setting up Remove Process
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package kernel-devel.i686 0:2.6.9-42.0.3.EL set to be erased
---> Package kernel-hugemem-devel.i686 0:2.6.9-42.0.3.EL set to be erased
---> Package kernel-smp.i686 0:2.6.9-42.0.3.EL set to be erased
---> Package kernel-smp-devel.i686 0:2.6.9-42.0.3.EL set to be erased
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Removing:
 kernel-devel            i686       2.6.9-42.0.3.EL  installed          11 M
 kernel-hugemem-devel    i686       2.6.9-42.0.3.EL  installed          11 M
 kernel-smp              i686       2.6.9-42.0.3.EL  installed          29 M
 kernel-smp-devel        i686       2.6.9-42.0.3.EL  installed          11 M

Transaction Summary
=============================================================================
Install      0 Package(s)
Update       0 Package(s)
Remove       4 Package(s)
Total download size: 0
Is this ok [y/N]: y
Downloading Packages:
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Fatal: open /boot/vmlinuz-2.6.14.3.dn2.p4: No such file or directory
  Removing  : kernel-smp                   ######################### [1/4]
  Removing  : kernel-devel                 ######################### [2/4]
  Removing  : kernel-hugemem-devel         ######################### [3/4]
  Removing  : kernel-smp-devel             ######################### [4/4]

Removed: kernel-devel.i686 0:2.6.9-42.0.3.EL kernel-hugemem-devel.i686 0:2.6.9-42.0.3.EL kernel-smp.i686 0:2.6.9-42.0.3.EL kernel-smp-devel.i686 0:2.6.9-42.0.3.EL
Complete!