Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 77000)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 77001)
@@ -4225,5 +4225,9 @@
     /* Populate the list of medium names to be excluded from the
        recently used media extra data: */
+#if 0 /* bird: This is counter productive as it is _frequently_ necessary to re-insert the
+               viso to refresh the files (like after you rebuilt them on the host).
+               The guest caches ISOs aggressively and files sizes may change. */
     m_recentMediaExcludeList << "ad-hoc.viso";
+#endif
 }