diff -ru a/sql/sql_db.cc b/sql/sql_db.cc
--- a/sql/sql_db.cc	2009-02-07 15:06:32.000000000 +0900
+++ b/sql/sql_db.cc	2009-03-13 19:01:15.000000000 +0900
@@ -1334,6 +1334,9 @@
              new_db_file_name.str);
     mysql_log.write(thd, COM_INIT_DB, ER(ER_DBACCESS_DENIED_ERROR),
                     sctx->priv_user, sctx->priv_host, new_db_file_name.str);
+    if (!thd->killed && thd->variables.log_warnings > 1)
+      sql_print_warning(ER(ER_DBACCESS_DENIED_ERROR),
+                        sctx->priv_user, sctx->priv_host, new_db_file_name.str);
     my_free(new_db_file_name.str, MYF(0));
     DBUG_RETURN(TRUE);
   }
diff -ru a/sql/sql_parse.cc b/sql/sql_parse.cc
--- a/sql/sql_parse.cc	2009-02-07 15:06:33.000000000 +0900
+++ b/sql/sql_parse.cc	2009-03-13 18:57:55.000000000 +0900
@@ -364,6 +364,8 @@
   {
     net_printf_error(thd, ER_NOT_SUPPORTED_AUTH_MODE);
     mysql_log.write(thd, COM_CONNECT, ER(ER_NOT_SUPPORTED_AUTH_MODE));
+    if (!thd->killed && thd->variables.log_warnings > 1)
+      sql_print_warning(ER(ER_NOT_SUPPORTED_AUTH_MODE));
     DBUG_RETURN(-1);
   }
   if (passwd_len != 0 &&
@@ -399,6 +401,12 @@
       mysql_log.write(thd, COM_CONNECT, ER(ER_SERVER_IS_IN_SECURE_AUTH_MODE),
                       thd->main_security_ctx.user,
                       thd->main_security_ctx.host_or_ip);
+      if (!thd->killed && thd->variables.log_warnings > 1)
+      {
+        sql_print_warning(ER(ER_SERVER_IS_IN_SECURE_AUTH_MODE),
+                          thd->main_security_ctx.user,
+                          thd->main_security_ctx.host_or_ip);
+      }
       DBUG_RETURN(-1);
     }
     /* We have to read very specific packet size */
@@ -501,6 +509,8 @@
   {
     net_printf_error(thd, ER_NOT_SUPPORTED_AUTH_MODE);
     mysql_log.write(thd,COM_CONNECT,ER(ER_NOT_SUPPORTED_AUTH_MODE));
+    if (!thd->killed && thd->variables.log_warnings > 1)
+      sql_print_warning(ER(ER_NOT_SUPPORTED_AUTH_MODE));
     DBUG_RETURN(-1);
   }
   net_printf_error(thd, ER_ACCESS_DENIED_ERROR,
@@ -511,6 +521,13 @@
                   thd->main_security_ctx.user,
                   thd->main_security_ctx.host_or_ip,
                   passwd_len ? ER(ER_YES) : ER(ER_NO));
+  if (!thd->killed && thd->variables.log_warnings > 1)
+  {
+    sql_print_warning(ER(ER_ACCESS_DENIED_ERROR),
+                      thd->main_security_ctx.user,
+                      thd->main_security_ctx.host_or_ip,
+                      passwd_len ? ER(ER_YES) : ER(ER_NO));
+  }
   DBUG_RETURN(-1);
 #endif /* NO_EMBEDDED_ACCESS_CHECKS */
 }
diff -ru a/sql/sql_show.cc b/sql/sql_show.cc
--- a/sql/sql_show.cc	2009-02-07 15:06:33.000000000 +0900
+++ b/sql/sql_show.cc	2009-03-13 21:49:44.000000000 +0900
@@ -492,6 +492,9 @@
              sctx->priv_user, sctx->host_or_ip, dbname);
     mysql_log.write(thd,COM_INIT_DB,ER(ER_DBACCESS_DENIED_ERROR),
 		    sctx->priv_user, sctx->host_or_ip, dbname);
+    if (!thd->killed && thd->variables.log_warnings > 1)
+      sql_print_warning(ER(ER_DBACCESS_DENIED_ERROR),
+                        sctx->priv_user, sctx->host_or_ip, dbname);
     DBUG_RETURN(TRUE);
   }
 #endif