Can you give some more information of the events leading up to this behavior?
Here is one possibility;
Is your name resolution working?
2013-03-26T10:07:30.708-07:00 [02192 error 'HttpConnectionPool'] [ConnectComplete] Connect error No such host is known.2013-03-26T10:07:30.708-07:00 [02104 error 'Default' opID=d3fab384] [HttpUtil::ExecuteRequest] Error in sending request - No such host is known.
Can you help me with that ...Vsphere client works Fine but the Invenory service is starting hence the Web client is also not starting