[root@centos-50 servers]# rpm-ivh mysql-server-5.5.33-1.linux2.6.x86_64.rpm
Preparing ... ########################################### [100%]
File/usr/share/mysql/charsets/readme from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file from Package mysql-libs-5.1.52-1.el6_0.1.x86_64
File/usr/share/mysql/charsets/index.xml from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file from Package mysql-libs-5.1.52-1.el6_0.1.x86_64
File/usr/share/mysql/charsets/armscii8.xml from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file From Package mysql-libs-5.1.52-1.el6_0.1.x86_64
File/usr/share/mysql/charsets/ascii.xml from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file from Package mysql-libs-5.1.52-1.el6_0.1.x86_64
File/usr/share/mysql/charsets/cp1250.xml from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file From Package mysql-libs-5.1.52-1.el6_0.1.x86_64
File/usr/share/mysql/charsets/cp1251.xml from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file From Package mysql-libs-5.1.52-1.el6_0.1.x86_64
File/usr/share/mysql/charsets/cp1256.xml from install of mysql-server-5.5.33-1.linux2.6.x86_64 conflicts with file From Package mysql-libs-5.1.52-1.el6_0.1.x86_64
Workaround:
Uninstall MySQL:rpm-e--nodeps mysql-libs-5.1.*
CentOS installation MySQL Conflict resolution method