=== modified file 'sql/sql_cache.cc'
--- sql/sql_cache.cc	2013-02-28 15:36:00 +0000
+++ sql/sql_cache.cc	2013-05-08 04:03:23 +0000
@@ -4666,8 +4666,10 @@
 	{
 	  DBUG_PRINT("qcache", ("block 0x%lx, type %u...", 
 				(ulong) block, (uint) block->type));
-	  if (in_blocks(result_block))
+	  if (in_blocks(result_block)) {
 	    result= true;
+	    break;
+	  }
 
 	  result_block = result_block->next;
 	} while (result_block != results);