Yast is of of course as unfriendly when it comes to error messages as any other Linux program. I tried to start up Apache2 using Yast2 and there were only 3 fields in the configuration wizard to fill in: server name, administrator e-mail and listening port. I filled in as server name "Suse Linux". When Yast2 wanted to do the configuration, the error message was: Error: cannot adjust apache2 service Cool. Had I started apache manually (sudo /etc/init.d/apache2 start), I had noticed the following line among the error messages: Starting httpd2 (prefork) Syntax error on line 11 of /etc/apache2/sysconfig.d/global.conf: ServerName takes one argument, The hostname and port of the server Obviously "Suse Linux" was taken as two arguments. So I went back to the graphical interface and changed the value to "Suse_Linux" and this time it worked.