diff --git a/sql/ha_innodb.cc b/sql/ha_innodb.cc
index 483ada5364c..133ebc87377 100644
--- a/sql/ha_innodb.cc
+++ b/sql/ha_innodb.cc
@@ -1748,7 +1748,12 @@ innobase_mysql_cmp(
 			}
 		}
 
-                ret = my_strnncoll(charset,
+                /* Starting from 4.1.3, we use strnncollsp() in comparisons of
+                non-latin1_swedish_ci strings. NOTE that the collation order
+                changes then: 'b\0\0...' is ordered BEFORE 'b  ...'. Users
+                having indexes on such data need to rebuild their tables! */
+
+                ret = charset->coll->strnncollsp(charset,
                                   a, a_length,
                                   b, b_length);
 		if (ret < 0) {
@@ -4657,7 +4662,22 @@ ha_innobase::start_stmt(
 	        prepared for an update of a row */
 	  
 	        prebuilt->select_lock_type = LOCK_X;
-	}
+        } else {
+                if (thd->lex->sql_command == SQLCOM_SELECT
+                                        && thd->lex->lock_option == TL_READ) {
+ 
+                        /* For other than temporary tables, we obtain
+                        no lock for consistent read (plain SELECT) */
+ 
+                        prebuilt->select_lock_type = LOCK_NONE;
+                } else {
+                        /* Not a consistent read: use LOCK_X as the
+                        select_lock_type value (TODO: how could we know
+                        whether it should be LOCK_S, LOCK_X, or LOCK_NONE?) */
+
+                        prebuilt->select_lock_type = LOCK_X;
+                }
+        }
 	
 	/* Set the MySQL flag to mark that there is an active transaction */
 	thd->transaction.all.innodb_active_trans = 1;