Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 57610)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 57611)
@@ -59,4 +59,5 @@
 # include "QIDialogButtonBox.h"
 # include "UIIconPool.h"
+# include "UIThreadPool.h"
 # include "UIShortcutPool.h"
 # include "UIExtraDataManager.h"
@@ -255,4 +256,5 @@
     , mSettingsPwSet(false)
     , m_pIconPool(0)
+    , m_pThreadPool(0)
 {
     /* Assign instance: */
@@ -4058,4 +4060,7 @@
             this, SLOT(sltHandleVBoxSVCAvailabilityChange(bool)));
 
+    /* Prepare thread-pool instance: */
+    m_pThreadPool = new UIThreadPool(3 /* worker count */, 5000 /* worker timeout */);
+
     /* create default non-null global settings */
     gset = VBoxGlobalSettings (false);
@@ -4452,4 +4457,7 @@
     UIConverter::cleanup();
 
+    /* Cleanup thread-pool: */
+    delete m_pThreadPool;
+    m_pThreadPool = 0;
     /* Cleanup general icon-pool: */
     delete m_pIconPool;
Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h	(revision 57610)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h	(revision 57611)
@@ -65,4 +65,5 @@
 class UIMedium;
 class UIIconPoolGeneral;
+class UIThreadPool;
 #ifdef Q_WS_X11
 class UIDesktopWidgetWatchdog;
@@ -139,4 +140,7 @@
     /** Returns the VBoxSVC availability value. */
     bool isVBoxSVCAvailable() const { return m_fVBoxSVCAvailable; }
+
+    /** Returns the thread-pool instance. */
+    UIThreadPool* threadPool() const { return m_pThreadPool; }
 
     /** @name Host-screen geometry stuff
@@ -638,4 +642,6 @@
     /** General icon-pool. */
     UIIconPoolGeneral *m_pIconPool;
+    /** Holds the thread-pool instance. */
+    UIThreadPool *m_pThreadPool;
 
     /* API: Instance stuff: */
Index: /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMediumEnumerator.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMediumEnumerator.cpp	(revision 57610)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMediumEnumerator.cpp	(revision 57611)
@@ -69,7 +69,6 @@
 
 
-UIMediumEnumerator::UIMediumEnumerator(ulong uWorkerCount /* = 3*/, ulong uWorkerTimeout /* = 5000*/)
-    : m_pThreadPool(0)
-    , m_fMediumEnumerationInProgress(false)
+UIMediumEnumerator::UIMediumEnumerator()
+    : m_fMediumEnumerationInProgress(false)
 {
     /* Allow UIMedium to be used in inter-thread signals: */
@@ -84,15 +83,10 @@
     connect(gVBoxEvents, SIGNAL(sigMachineRegistered(QString, bool)), this, SLOT(sltHandleMachineRegistration(QString, bool)));
 
-    /* Prepare thread-pool: */
-    m_pThreadPool = new UIThreadPool(uWorkerCount, uWorkerTimeout);
-    connect(m_pThreadPool, SIGNAL(sigTaskComplete(UITask*)), this, SLOT(sltHandleMediumEnumerationTaskComplete(UITask*)));
+    /* Listen for global thread-pool: */
+    connect(vboxGlobal().threadPool(), SIGNAL(sigTaskComplete(UITask*)), this, SLOT(sltHandleMediumEnumerationTaskComplete(UITask*)));
 }
 
 UIMediumEnumerator::~UIMediumEnumerator()
 {
-    /* Delete thread-pool: */
-    delete m_pThreadPool;
-    m_pThreadPool = 0;
-
     /* Delete all the tasks: */
     while (!m_tasks.isEmpty())
@@ -348,6 +342,6 @@
     /* Append to internal list: */
     m_tasks.append(pTask);
-    /* Post into thread-pool: */
-    m_pThreadPool->enqueueTask(pTask);
+    /* Post into global thread-pool: */
+    vboxGlobal().threadPool()->enqueueTask(pTask);
 }
 
Index: /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMediumEnumerator.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMediumEnumerator.h	(revision 57610)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/medium/UIMediumEnumerator.h	(revision 57611)
@@ -51,6 +51,7 @@
 public:
 
-    /* Constructor/destructor: */
-    UIMediumEnumerator(ulong uWorkerCount = 3, ulong uWorkerTimeout = 5000);
+    /** Constructs medium-enumerator object. */
+    UIMediumEnumerator();
+    /** Destructs medium-enumerator object. */
     ~UIMediumEnumerator();
 
@@ -94,5 +95,4 @@
 
     /* Variables: */
-    UIThreadPool *m_pThreadPool;
     bool m_fMediumEnumerationInProgress;
     QList<UITask*> m_tasks;