diff -up ScriptTest-1.0.4/scripttest/__init__.py.files_updated ScriptTest-1.0.4/scripttest/__init__.py
--- ScriptTest-1.0.4/scripttest/__init__.py.files_updated	2010-07-14 13:55:52.000000000 +0200
+++ ScriptTest-1.0.4/scripttest/__init__.py	2010-07-14 13:56:34.000000000 +0200
@@ -382,7 +382,7 @@ class ProcResult(object):
                 self.files_deleted[path] = f
                 continue
             del self.files_created[path]
-            if f.mtime < files_after[path].mtime:
+            if f.bytes < files_after[path].bytes:
                 self.files_updated[path] = files_after[path]
 
     def assert_no_error(self, quiet):