I recently had an unpleasant surprise updating packages on a Centos 5 server with Plesk 10.4.4.
The awstats statistics stopped working. The reason was the update of
awstats-7.0-12012611.swsoft rpm with the update of Centos
I solved the problem by brutally removing the Centos package and reinstalling the Plesk one.
rpm -e --nodeps awstats wget http://220.127.116.11/PSA_10.4.4/dist-rpm-CentOS-5-x86_64/contrib/awstats-7.0-12012611.swsoft.noarch.rpm rpm -ivh awstats-7.0-12012611.swsoft.noarch.rpm