I'm trying to install php-pdo but it always fails because of php-common

bash-3.2# yum install php-pdo
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * epel: fedora-epel.mirror.lstn.net
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php-pdo.i386 0:5.1.6-40.el5_9 set to be updated
--> Processing Dependency: php-common = 5.1.6-40.el5_9 for package: php-pdo
--> Finished Dependency Resolution
php-pdo-5.1.6-40.el5_9.i386 from base has depsolving problems
  --> Missing Dependency: php-common = 5.1.6-40.el5_9 is needed by package php-pdo-5.1.6-40.el5_9.i386 (base)
Error: Missing Dependency: php-common = 5.1.6-40.el5_9 is needed by package php-pdo-5.1.6-40.el5_9.i386 (base)
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
                        package-cleanup --dupes
                        rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.

Installing php-common I get:

bash-3.2# yum install php-common
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * epel: fedora-epel.mirror.lstn.net
Setting up Install Process
Package matching php-common-5.1.6-40.el5_9.i386 already installed. Checking for update.
Nothing to do

Searched here and google but couldn't find anything that worked

EDIT: Added new repositories:

bash-3.2# yum install php-common
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository addons is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository contrib is listed more than once in the configuration
Loading mirror speeds from cached hostfile
 * addons: mirror.raystedman.net
 * base: mirror.5ninesolutions.com
 * centosplus: mirror.anl.gov
 * contrib: yum.singlehop.com
 * epel: fedora-epel.mirror.lstn.net
 * extras: centos.unmeteredvps.net
 * update: mirror.team-cymru.org
addons                                                   | 1.9 kB     00:00
base                                                     | 1.1 kB     00:00
centosplus                                               | 1.9 kB     00:00
centosplus/primary_db                                    |  53 kB     00:01
contrib                                                  | 1.9 kB     00:00
contrib/primary_db                                       | 1.1 kB     00:00
epel                                                     | 3.6 kB     00:00
extras                                                   | 2.1 kB     00:00
nginx                                                    | 2.5 kB     00:00
update                                                   | 1.9 kB     00:00
update/primary_db                                        |  84 kB     00:04
updates                                                  | 1.9 kB     00:00
Setting up Install Process
Package matching php-common-5.1.6-40.el5_9.i386 already installed. Checking for update.
Nothing to do

And then...

bash-3.2# yum install php-pdo
Loaded plugins: fastestmirror
Repository base is listed more than once in the configuration
Repository addons is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Repository contrib is listed more than once in the configuration
Loading mirror speeds from cached hostfile
 * addons: mirror.raystedman.net
 * base: centos.mirror.lstn.net
 * centosplus: mirror.anl.gov
 * contrib: yum.singlehop.com
 * epel: fedora-epel.mirror.lstn.net
 * extras: centos.unmeteredvps.net
 * update: mirrors.loosefoot.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php-pdo.i386 0:5.1.6-40.el5_9 set to be updated
--> Processing Dependency: php-common = 5.1.6-40.el5_9 for package: php-pdo
--> Finished Dependency Resolution
php-pdo-5.1.6-40.el5_9.i386 from base has depsolving problems
  --> Missing Dependency: php-common = 5.1.6-40.el5_9 is needed by package php-pdo-5.1.6-40.el5_9.i386 (base)
Error: Missing Dependency: php-common = 5.1.6-40.el5_9 is needed by package php-pdo-5.1.6-40.el5_9.i386 (base)
 You could try using --skip-broken to work around the problem
 You could try running: package-cleanup --problems
                        package-cleanup --dupes
                        rpm -Va --nofiles --nodigest
The program package-cleanup is found in the yum-utils package.