On Tue, 04 Aug 2009 08:22:14 +0200, André Warnier wrote: [...] >> > You could first check the obvious, such as whether in your Apache/Centos > config, you are not *asking* the server to do these DNS lookups. Look > here for instance : > http://httpd.apache.org/docs/2.2/mod/mod_log_config.html#formats (I mean > that if your are asking Apache to log the *name* of the client in the > access log for instance, then it has to do a lookup) Any time, anywhere, > where Apache, for whatever reason, has to translate an IP address into a > name or vice-versa, may result in this behaviour. > [...] In LogFormat, I changed %h to %a, which hat no effect. I did "solve" the problem by completely blocking DNS in iptables. As it happens, in my present configuration, this is not a problem, but I would hardly call it a satisfactory solution. Remember, the httpd.config works without problem on a neighboring box (with a different OS). Mike. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx