Guys, I tried few other things including webmin and ISPConfig on debian which doesn't give me much of a freedom with OS and finally back to FC4+ISPConfig again.
I started getting following errors from cron.daily and investigated which resulted in finding a broken link to ISPConfig log file.
Reload this Page Use of uninitialized value in numeric le (<=) at /etc/cron.daily/0logwatch line 683
I am not sure why I ended up with a broken link to ISPConfig file.
lrwxrwxrwx 1 root root 46 Mar 19 03:25 /var/log/httpd/ispconfig_access_log.1 -> /var/log/httpd/ispconfig_access_log_2006_03_19
I might have to exclude ispconfig_access_log from logwatch cron, but not sure how.
ISPConfig is great piece of software compare with all others which are too complicated with not enough documentation. I would recommend this and would love to keep it on as long as it works for me and keeps developing.