diff --git a/Zend/zend.c b/Zend/zend.c
index a060602aba6..485c6a38803 100644
--- a/Zend/zend.c
+++ b/Zend/zend.c
@@ -417,7 +417,7 @@ ZEND_API void zend_print_zval_r_ex(zend_write_func_t write_func, zval *expr, int
 				}
 				ZEND_PUTS_EX(" Object\n");
 				if (class_name) {
-					efree((char*)class_name);
+					STR_RELEASE(class_name);
 				}
 				if ((properties = Z_OBJDEBUG_P(expr, is_temp)) == NULL) {
 					break;
diff --git a/Zend/zend_API.c b/Zend/zend_API.c
index 80eb984b17e..e2737a270ca 100644
--- a/Zend/zend_API.c
+++ b/Zend/zend_API.c
@@ -3694,6 +3694,15 @@ ZEND_API void zend_update_property_double(zend_class_entry *scope, zval *object,
 }
 /* }}} */
 
+ZEND_API void zend_update_property_str(zend_class_entry *scope, zval *object, const char *name, int name_length, zend_string *value TSRMLS_DC) /* {{{ */
+{
+	zval tmp;
+
+	ZVAL_STR(&tmp, STR_COPY(value));
+	zend_update_property(scope, object, name, name_length, &tmp TSRMLS_CC);
+}
+/* }}} */
+
 ZEND_API void zend_update_property_string(zend_class_entry *scope, zval *object, const char *name, int name_length, const char *value TSRMLS_DC) /* {{{ */
 {
 	zval tmp;
diff --git a/Zend/zend_API.h b/Zend/zend_API.h
index 7f8f30d8f29..3aeac177f0b 100644
--- a/Zend/zend_API.h
+++ b/Zend/zend_API.h
@@ -323,6 +323,7 @@ ZEND_API void zend_update_property_null(zend_class_entry *scope, zval *object, c
 ZEND_API void zend_update_property_bool(zend_class_entry *scope, zval *object, const char *name, int name_length, long value TSRMLS_DC);
 ZEND_API void zend_update_property_long(zend_class_entry *scope, zval *object, const char *name, int name_length, long value TSRMLS_DC);
 ZEND_API void zend_update_property_double(zend_class_entry *scope, zval *object, const char *name, int name_length, double value TSRMLS_DC);
+ZEND_API void zend_update_property_str(zend_class_entry *scope, zval *object, const char *name, int name_length, zend_string *value TSRMLS_DC);
 ZEND_API void zend_update_property_string(zend_class_entry *scope, zval *object, const char *name, int name_length, const char *value TSRMLS_DC);
 ZEND_API void zend_update_property_stringl(zend_class_entry *scope, zval *object, const char *name, int name_length, const char *value, int value_length TSRMLS_DC);
 
diff --git a/Zend/zend_exceptions.c b/Zend/zend_exceptions.c
index 9473751ae43..48779b47ec7 100644
--- a/Zend/zend_exceptions.c
+++ b/Zend/zend_exceptions.c
@@ -160,6 +160,7 @@ static zend_object *zend_default_exception_new_ex(zend_class_entry *class_type,
 	object_properties_init(object, class_type);
 
 	zend_fetch_debug_backtrace(&trace, skip_top_traces, 0, 0 TSRMLS_CC);
+	Z_SET_REFCOUNT(trace, 0);
 
 	zend_update_property_string(default_exception_ce, &obj, "file", sizeof("file")-1, zend_get_executed_filename(TSRMLS_C) TSRMLS_CC);
 	zend_update_property_long(default_exception_ce, &obj, "line", sizeof("line")-1, zend_get_executed_lineno(TSRMLS_C) TSRMLS_CC);
@@ -194,19 +195,19 @@ ZEND_METHOD(exception, __clone)
    Exception constructor */
 ZEND_METHOD(exception, __construct)
 {
-	char  *message = NULL;
+	zend_string *message = NULL;
 	long   code = 0;
 	zval  *object, *previous = NULL;
-	int    argc = ZEND_NUM_ARGS(), message_len;
+	int    argc = ZEND_NUM_ARGS();
 
-	if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|slO!", &message, &message_len, &code, &previous, default_exception_ce) == FAILURE) {
+	if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "|SlO!", &message, &code, &previous, default_exception_ce) == FAILURE) {
 		zend_error(E_ERROR, "Wrong parameters for Exception([string $exception [, long $code [, Exception $previous = NULL]]])");
 	}
 
 	object = getThis();
 
 	if (message) {
-		zend_update_property_stringl(default_exception_ce, object, "message", sizeof("message")-1, message, message_len TSRMLS_CC);
+		zend_update_property_str(default_exception_ce, object, "message", sizeof("message")-1, message TSRMLS_CC);
 	}
 
 	if (code) {
diff --git a/Zend/zend_object_handlers.c b/Zend/zend_object_handlers.c
index eef85d51e78..9029f45cc43 100644
--- a/Zend/zend_object_handlers.c
+++ b/Zend/zend_object_handlers.c
@@ -579,6 +579,7 @@ found:
 						zval_ptr_dtor(&garbage);
 					}
 				}
+				return;
 			}
 		}
 	}
@@ -1604,7 +1605,7 @@ int zend_std_get_closure(zval *obj, zend_class_entry **ce_ptr, zend_function **f
 
 ZEND_API zend_object_handlers std_object_handlers = {
 	zend_object_free,						/* free_obj */
-	zend_object_std_dtor,					/* dtor_obj */
+	zend_objects_destroy_object,			/* dtor_obj */
 	zend_objects_clone_obj,					/* clone_obj */
 
 	zend_std_read_property,					/* read_property */
diff --git a/Zend/zend_objects_API.c b/Zend/zend_objects_API.c
index 8e406ec7154..6f80771ce6a 100644
--- a/Zend/zend_objects_API.c
+++ b/Zend/zend_objects_API.c
@@ -129,7 +129,7 @@ ZEND_API void zend_objects_store_del(zend_object *object TSRMLS_DC) /* {{{ */
 	 */
 	if (EG(objects_store).object_buckets &&
 	    IS_VALID(EG(objects_store).object_buckets[object->handle])) {
-		if (object->gc.refcount == 1) {
+		if (object->gc.refcount == 0) {
 			int failure = 0;
 
 			if (!(object->gc.u.v.flags & IS_OBJ_DESTRUCTOR_CALLED)) {
@@ -146,7 +146,7 @@ ZEND_API void zend_objects_store_del(zend_object *object TSRMLS_DC) /* {{{ */
 				}
 			}
 			
-			if (object->gc.refcount == 1) {
+			if (object->gc.refcount == 0) {
 				zend_uint handle = object->handle;
 
 //???				GC_REMOVE_ZOBJ_FROM_BUFFER(obj);