Can no longer do yum update

[kwest]

For some unknown reason I can no longer do yum -y updates I get the following errors each time, anyone know why and how to correct this?

Total download size: 32 M
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test


Transaction Check Error:
file /usr/share/pear/.channels/__uri.reg from install of php-pear-db-1.7.13-1.el5.rf conflicts with file from package php-pear-1.4.9-4.el5.1
file /usr/share/pear/.channels/pear.php.net.reg from install of php-pear-db-1.7.13-1.el5.rf conflicts with file from package php-pear-1.4.9-4.el5.1
file /usr/share/pear/.channels/pecl.php.net.reg from install of php-pear-db-1.7.13-1.el5.rf conflicts with file from package php-pear-1.4.9-4.el5.1
file /usr/share/pear/.depdb from install of php-pear-db-1.7.13-1.el5.rf conflicts with file from package php-pear-1.4.9-4.el5.1

Error Summary
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.. upgrade failed!