title: Very slow connection to SQL Server 2005 only if using ADO.NET with SqlClient
body: <p>I have a brand new server with Windows 2008 Server 64 bit + SQL Server 2005 Standard Edition SP3.</p>
  
  <p>When I try to open a connection to this server from a client in the same domain (Windows XP, .Net 3.5), it takes around 20 seconds to open the connection.</p>
  
  <p>After opening the connection, everything is fast as usual.</p>
  
  <p>When using a MDAC 2.8 connection, or ADO.NET OleDb, there is no problem at all.</p>
  
  <p>How can I find the reason for the slow connection?</p>