Dear All, I have a problem with my web application. I configured tomcat 6.0 to authenticate users through Realm ( LDAP), it connects to an active directory server. Everything seems OK, but sometimes the connection could not be established ( Connection refused ) and it continues with this state for ~ 10 minutes. Stopping and starting tomcat again won't affect anything, I should restart the machine so that users can access the web application normally ( or just wait for 10 minutes). How can I solve this problem? Regards, -- Hisham Farahat