I am running a joomla site on a centos 6 server with fresh build of virtualmin.
latest joomla requires PHP 5.4 so i followed instructions here http://www.virtualmin.com/documentation/web/multiplephp
then if i tried this
[ME ~]# yum install php-mbstring
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Setting up Install Process
Package php-mbstring-5.3.3-27.el6_5.x86_64 already installed and latest version
Nothing to do
From what i can see it is trying to install on 5.3 not 5.4
I am by no means a linux/php guru so please give sufficient detail.