limit_conn/limit_req, side effect, need help

[GerMalaz]

In nginx.conf

    limit_zone xxxxxx $binary_remote_addr 1M;
    limit_req_zone $binary_remote_addr  zone=xxxxxx_freq:1M   rate=30r/m;

In site definition
    limit_conn        xxxxxx 3;
   limit_req zone=xxxxxx_freq burst=1 nodelay; 


First connection usually gets a 503, subsequent ones work.

First connection usually refers to a dir without / final, then another with / is requested, then dir/index.php.

Any help will be appreciated.
Thanks,
          Gerardo

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,56349,56349#msg-56349