--- a/src/core/interface.cc	Mon May 14 17:00:49 2007 +0200
+++ b/src/core/interface.cc	Mon May 14 11:05:37 2007 -0400
@@ -173,7 +173,7 @@
 Interface::~Interface ()
 {
   m_impl = 0;
-  m_ref = -1;
+  m_ref = 0xffffffff;
 }
 void 
 Interface::Ref (void) const