If you found trouble when running 'yum update':
Error: Package: webalizer-2.23_05-5.mr.el6.x86_64 (@mratwork-release-version-arc h)
Requires: libgd.so.2()(64bit)
Removing: gd-2.0.35-11.el6.x86_64 (@base)
libgd.so.2()(64bit)
Updated By: gd-2.1.0-1.el6.x86_64 (mratwork-centalt)
Not found
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest
follow this step:
rpm -e gd --nodeps
yum install gd
yum update