I follow all the steps stated in this page (http://www.howtoforge.com/how-to-install-tomcat6-with-sun-java-and-apache2-integration-on-ubuntu-10.04-lucid-lynx-with-virtual-hosts) because i want to set-up an Apache Tomcat Web Server for our school but unfortunately i got an error saying "JkWorkersFile only allowed once"... What is the problem with this kind of error? I am new in linux... please help me...