Index: /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserHandlerKeyboard.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserHandlerKeyboard.cpp	(revision 42542)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserHandlerKeyboard.cpp	(revision 42543)
@@ -56,4 +56,8 @@
         case Qt::Key_Up:
         {
+            /* Not during sliding: */
+            if (model()->isSlidingInProgress())
+                return false;
+
             /* Determine focus item position: */
             int iPosition = model()->navigationList().indexOf(model()->focusItem());
@@ -111,4 +115,8 @@
         case Qt::Key_Down:
         {
+            /* Not during sliding: */
+            if (model()->isSlidingInProgress())
+                return false;
+
             /* Determine focus item position: */
             int iPosition = model()->navigationList().indexOf(model()->focusItem());
Index: /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserModel.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserModel.cpp	(revision 42542)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserModel.cpp	(revision 42543)
@@ -170,4 +170,9 @@
     /* Slide root: */
     slideRoot(false);
+}
+
+bool UIGChooserModel::isSlidingInProgress() const
+{
+    return m_fSliding;
 }
 
Index: /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserModel.h
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserModel.h	(revision 42542)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/selector/graphics/chooser/UIGChooserModel.h	(revision 42543)
@@ -91,4 +91,5 @@
     void indentRoot(UIGChooserItem *pNewRootItem);
     void unindentRoot();
+    bool isSlidingInProgress() const;
 
     /* API: Current item stuff: */