At this moment, run 'yum update' will be fail. It's because something trouble with CentAlt repo (include in mratwork.repo).
To fix this issue:
cd /
yum clean all
yum update mratwork* --disablerepo=*centalt*
yum update kloxomr
sh /script/fixrepo
sh /script/cleanup
After above steps, you can run 'yum update' normally.