Hi Falko, I've seen that within the INSTALL_DEBIAN_5.0.txt file which comes with ISPConfig 3, the following text is mentioned: 6) Install vlogger and webalizer apt-get install vlogger webalizer Change the following line in /etc/webalizer/webalizer.conf from #Incremental no to Incremental yes While within the Perfect ISPConfig 3 server howto for Debian Lenny you've mentioned only: apt-get install vlogger webalizer So i think you've to correct your howto at this point, because we're missing here the modification of the file /etc/webalizer/webalizer.conf. Isn't it?