[syslog-ng] why i have to restart syslog to have the new apache log??

hi i am using syslog-ng 2.0.9.1 on open suse 11.0 i configured this littele script in /etc/syslog-ng/syslog-ng.conf source my_src { file("/var/log/apache2/error_log"); };

#filter my_filter { };

destination my_dest{ file("/var/log/Sami/$HOST/messages" owner("root") group("root") perm(0640) dir_perm(0750) create_dirs(yes)); };

log { source(my_src); #filter(my_filter); destination(my_dest); };

the problem is when i restart apache2 while using the *tail -f /var/log/Sami/$HOST/messages *nothing happens i have to restart syslog-ng to see those errors by the way i stoped the apparmor to avoid a permission denied on the destination driver i need help plz tks