* Fixed non Serializable exception.

base/src/org/compiere/db/CConnection.java

@@ -1666,12 +1666,5 @@ public class CConnection implements Serializable, Cloneable
 		Connection con = cc.getConnection (false,
 						 Connection.TRANSACTION_READ_COMMITTED);
 		new CConnectionDialog(cc);
-	}	//	main
-
-	
-	private class SecurityPrincipal {
-		String principal;
-		String credential;
-	}
-
+	}	//	main	
 }	//  CConnection

base/src/org/compiere/db/SecurityPrincipal.java

@@ -0,0 +1,27 @@
+/******************************************************************************
+ * Copyright (C) 2008 Low Heng Sin                                            *
+ * This program is free software; you can redistribute it and/or modify it    *
+ * under the terms version 2 of the GNU General Public License as published   *
+ * by the Free Software Foundation. This program is distributed in the hope   *
+ * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied *
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.           *
+ * See the GNU General Public License for more details.                       *
+ * You should have received a copy of the GNU General Public License along    *
+ * with this program; if not, write to the Free Software Foundation, Inc.,    *
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.                     *
+ *****************************************************************************/
+package org.compiere.db;
+
+import java.io.Serializable;
+
+/**
+ * Use by CConnection to store authentication info for application server.
+ * @author Low Heng Sin
+ *
+ */
+class SecurityPrincipal implements Serializable {
+	private static final long serialVersionUID = 1L;
+	
+	String principal;
+	String credential;
+}