Hi, My box: CentOS 4.4 + ISPConfig, Well, ISPConfig work fine (at beginning). I can login, change server setting, see services status, etc.... tried to add 1site (drupal in 10 easy step...) Suddenly, iam logged out and the whole ISPConfig web is down. -new domain(drupal site) not working. -Default site is not working too. i look in log error: and find this, ...and this is a kind of loop... i see this part repeat in the /var/log/http/log_error After 3+ min ... ISPConfig interface is show up. I can login again. Defaul site is running again. New site doesnt I think my problem is DNS related. What i tried: install CentOS with "perfect setup". DNS setup with Two-in-one DNS server with BIND9. Once i use ISPConfig to add "new site" (drupal. but i dont use DNS Manager. i just add dns entries in site config) the whole thing come down. I reinstalled about 2-3 times. 1- CentOS perfect setup. ISPConfig to manage DNS .... same happen 2- CentOS perfect setup. DNS: Two-in-one DNS...., Then ISPConfig to manage sites.... same happen. I am tracking down the error but still dont find out. I've seen once i add new site with: i start to see the error. Maybe iam just confused. i really appreciate your help. Thanks in advanced!