Index: subsystems/win32/win32k/ntuser/msgqueue.c
===================================================================
--- subsystems/win32/win32k/ntuser/msgqueue.c	(revision 43072)
+++ subsystems/win32/win32k/ntuser/msgqueue.c	(working copy)
@@ -516,32 +516,10 @@
    BOOL Accept, Freed;
    PLIST_ENTRY CurrentEntry;
    PWINDOW_OBJECT DesktopWindow = NULL;
-   PVOID WaitObjects[2];
-   NTSTATUS WaitStatus;
    DECLARE_RETURN(BOOL);
    USER_REFERENCE_ENTRY Ref;
    PDESKTOPINFO Desk = NULL;
 
-   WaitObjects[1] = MessageQueue->NewMessages;
-   WaitObjects[0] = &HardwareMessageQueueLock;
-   do
-   {
-      IdlePing();
-
-      UserLeaveCo();
-
-      WaitStatus = KeWaitForMultipleObjects(2, WaitObjects, WaitAny, UserRequest,
-                                            UserMode, FALSE, NULL, NULL);
-
-      UserEnterCo();
-
-      while (co_MsqDispatchOneSentMessage(MessageQueue))
-      {
-         ;
-      }
-   }
-   while (NT_SUCCESS(WaitStatus) && STATUS_WAIT_0 != WaitStatus);
-
    DesktopWindow = UserGetWindowObject(IntGetDesktopWindow());
 
    if (DesktopWindow)
@@ -573,7 +551,6 @@
                RemoveEntryList(&Current->ListEntry);
             }
             IntUnLockHardwareMessageQueue(MessageQueue);
-            IntUnLockSystemHardwareMessageQueueLock(FALSE);
             *Message = Current;
 
             if (Desk)
@@ -697,7 +674,6 @@
                               &Current->ListEntry);
                IntUnLockHardwareMessageQueue(MessageQueue);
             }
-            IntUnLockSystemHardwareMessageQueueLock(FALSE);
             *Message = Current;
 
             RETURN(TRUE);
@@ -718,7 +694,6 @@
       KeClearEvent(&HardwareMessageEvent);
    }
    IntUnLockSystemMessageQueue(OldIrql);
-   IntUnLockSystemHardwareMessageQueueLock(FALSE);
 
    RETURN(FALSE);