--- vinagre-vnc-tab.c.orig	2011-12-19 16:53:36.781767970 +0200
+++ vinagre-vnc-tab.c	2011-12-19 16:53:50.811768029 +0200
@@ -496,7 +496,7 @@
 	{
 	  host = vinagre_connection_get_best_name (conn);
 	  if (!vinagre_utils_request_credential (window, "VNC", host,
-	     need_username, need_password, 8, &username, &password,
+	     need_username, need_password, 20, &username, &password,
 	     &save_in_keyring))
 	    {
 	      vinagre_tab_remove_from_notebook (tab);
