=== modified file 'bin/osv/fields.py'
--- bin/osv/fields.py	2010-05-18 09:30:44 +0000
+++ bin/osv/fields.py	2010-06-25 12:59:42 +0000
@@ -633,7 +633,8 @@
         self._fnct_search = fnct_search
         self.store = store
         if store:
-            self._classic_read = True
+            if type != 'many2one':
+                self._classic_read = True
             self._classic_write = True
             if type=='binary':
                 self._symbol_get=lambda x:x and str(x)