Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 57951)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.cpp	(revision 57952)
@@ -232,4 +232,7 @@
 VBoxGlobal::VBoxGlobal()
     : mValid (false)
+#ifdef Q_WS_MAC
+    , m_osRelease(MacOSXRelease_Old)
+#endif /* Q_WS_MAC */
     , m_fWrappersValid(false)
     , m_fVBoxSVCAvailable(true)
@@ -315,5 +318,5 @@
 #ifdef Q_WS_MAC
 /* static */
-MacOSXRelease VBoxGlobal::osRelease()
+MacOSXRelease VBoxGlobal::determineOsRelease()
 {
     /* Prepare 'utsname' struct: */
@@ -3978,4 +3981,9 @@
     connect(qApp, SIGNAL(aboutToQuit()), this, SLOT(cleanup()));
 
+#ifdef Q_WS_MAC
+    /* Determine OS release early: */
+    m_osRelease = determineOsRelease();
+#endif /* Q_WS_MAC */
+
     /* Create message-center: */
     UIMessageCenter::create();
Index: /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h	(revision 57951)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/globals/VBoxGlobal.h	(revision 57952)
@@ -120,6 +120,8 @@
 
 #ifdef Q_WS_MAC
-    /** Returns #MacOSXRelease determined using <i>uname</i> call. */
-    static MacOSXRelease osRelease();
+    /** Mac OS X: Returns #MacOSXRelease determined using <i>uname</i> call. */
+    static MacOSXRelease determineOsRelease();
+    /** Mac OS X: Returns #MacOSXRelease determined during VBoxGlobal prepare routine. */
+    MacOSXRelease osRelease() const { return m_osRelease; }
 #endif /* Q_WS_MAC */
 
@@ -520,4 +522,9 @@
 
     bool mValid;
+
+#ifdef Q_WS_MAC
+    /** Mac OS X: Holds the #MacOSXRelease determined using <i>uname</i> call. */
+    MacOSXRelease m_osRelease;
+#endif /* Q_WS_MAC */
 
     /** COM cleanup protection token. */
Index: /trunk/src/VBox/Frontends/VirtualBox/src/main.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/main.cpp	(revision 57951)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/main.cpp	(revision 57952)
@@ -373,5 +373,5 @@
 #ifdef Q_WS_MAC
         /* Apply font fixes (before QApplication get created and instantiated font-hints): */
-        switch (VBoxGlobal::osRelease())
+        switch (VBoxGlobal::determineOsRelease())
         {
             case MacOSXRelease_Mavericks: QFont::insertSubstitution(".Lucida Grande UI", "Lucida Grande"); break;