I added a ethernet card in CRM server. And route all request this card. But not connect this internet via this card. And then go back this settings. But CRM not attempt connect again SugarCRM server. Always get this error "Error: Could not connect to the Sugar Server. Please check your Proxy Settings value in the System Settings admin panel. Last attempted connection @ 2007-10-01 08:34". This time not change a long time. How can i solve this problem?. Can u help me?

PS: Changed proxy settings or delete that but not change anything.