Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 76882)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 76883)
@@ -3124,5 +3124,12 @@
 void VBoxGlobal::updateRecentlyUsedMediumListAndFolder(UIMediumDeviceType enmMediumType, QString strMediumLocation)
 {
-       /* Remember the path of the last chosen medium: */
+    /** Don't add the medium to extra data if its name is in exclude list, m_recentMediaExcludeList: */
+    foreach (QString strExcludeName, m_recentMediaExcludeList)
+    {
+        if (strMediumLocation.contains(strExcludeName))
+            return;
+    }
+
+    /* Remember the path of the last chosen medium: */
     switch (enmMediumType)
     {
@@ -4212,4 +4219,8 @@
     checkForWrongUSBMounted();
 #endif /* RT_OS_LINUX */
+
+    /* Populate the list of medium names to be excluded from the
+       recently used media extra data: */
+    m_recentMediaExcludeList << "ad-hoc.viso";
 }
 
Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h	(revision 76882)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h	(revision 76883)
@@ -871,4 +871,6 @@
         /** Holds the medium enumerator. */
         UIMediumEnumerator *m_pMediumEnumerator;
+        /** List of medium names that should not appears in the recently used media extra data. */
+        QStringList         m_recentMediaExcludeList;
     /** @} */