Error on upgrading php to 5.2 on the installation

[k-2]

Hi all,

i will testing the ispCP Omega and have a problem with the installation.
I will upgrade php to the recommended version 5.2 and receive an error on the yum transactions test

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Transaction Check Error:
file /etc/my.cnf from install of mysql-libs-5.1.32-1.el5.remi.i386 conflicts with file from package mysql-5.0.45-7.el5.i386
file /usr/share/mysql/charsets/Index.xml from install of mysql-libs-5.1.32-1.el5.remi.i386 conflicts with file from package mysql-5.0.45-7.el5.i386
file /usr/share/mysql/charsets/README from install of mysql-libs-5.1.32-1.el5.remi.i386 conflicts with file from package mysql-5.0.45-7.el5.i386
file /usr/share/mysql/charsets/ascii.xml from install of mysql-libs-5.1.32-1.el5.remi.i386 conflicts with file from package mysql-5.0.45-7.el5.i386
.....

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who is the problem.
must i upgrade mysql also or can i fix this other.

Thanks for help