Index: base/shell/explorer/precomp.h
===================================================================
--- base/shell/explorer/precomp.h	(revision 74680)
+++ base/shell/explorer/precomp.h	(working copy)
@@ -58,6 +58,9 @@
 extern HANDLE hProcessHeap;
 extern HKEY hkExplorer;
 
+#define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
+#define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
+
 /*
  * explorer.c
  */
Index: base/shell/explorer/taskswnd.cpp
===================================================================
--- base/shell/explorer/taskswnd.cpp	(revision 74680)
+++ base/shell/explorer/taskswnd.cpp	(working copy)
@@ -21,9 +21,6 @@
 #include "precomp.h"
 #include <commoncontrols.h>
 
-#define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
-#define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
-
 /* Set DUMP_TASKS to 1 to enable a dump of the tasks and task groups every
    5 seconds */
 #define DUMP_TASKS  0
Index: base/shell/explorer/trayntfy.cpp
===================================================================
--- base/shell/explorer/trayntfy.cpp	(revision 74680)
+++ base/shell/explorer/trayntfy.cpp	(working copy)
@@ -20,9 +20,6 @@
 
 #include "precomp.h"
 
-#define GET_X_LPARAM(lp) ((int)(short)LOWORD(lp))
-#define GET_Y_LPARAM(lp) ((int)(short)HIWORD(lp))
-
 /*
  * SysPagerWnd
  */
Index: base/shell/explorer/traywnd.cpp
===================================================================
--- base/shell/explorer/traywnd.cpp	(revision 74680)
+++ base/shell/explorer/traywnd.cpp	(working copy)
@@ -2446,6 +2446,57 @@
         return TRUE;
     }
 
+    LRESULT OnNcLButtonDown(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
+    {
+        /* This handler implements the trick that makes  the start button to 
+           get pressed when the user clicked left or below the button */
+
+        POINT pt = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
+        WINDOWINFO wi = {sizeof(WINDOWINFO)};
+        RECT rcStartBtn;
+
+        bHandled = FALSE;
+
+        m_StartButton.GetWindowRect(&rcStartBtn);
+
+        switch (m_Position)
+        {
+            case ABE_TOP:
+            case ABE_LEFT:
+            {
+                if (pt.x > rcStartBtn.right || pt.y > rcStartBtn.bottom)
+                    return 0;
+                break;
+            }
+            case ABE_RIGHT:
+            {
+                if (pt.x < rcStartBtn.left || pt.y > rcStartBtn.bottom)
+                    return 0;
+                break;
+            }
+            case ABE_BOTTOM:
+            {
+                if (pt.x > rcStartBtn.right || pt.y < rcStartBtn.top)
+                {
+                    return 0;
+                }
+
+                GetWindowInfo(m_hWnd, &wi);
+                if ((int)(rcStartBtn.bottom + wi.cyWindowBorders * 2 + 1) < wi.rcWindow.bottom &&
+                    pt.y > rcStartBtn.bottom)
+                {
+                    return 0;
+                }
+        
+                break;
+            }
+        }
+
+        bHandled = TRUE;
+        PopupStartMenu();
+        return 0;
+    }
+
     LRESULT OnNcRButtonUp(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
     {
         /* We want the user to be able to get a context menu even on the nonclient
@@ -2798,6 +2849,7 @@
         MESSAGE_HANDLER(WM_WINDOWPOSCHANGING, OnWindowPosChange)
         MESSAGE_HANDLER(WM_ENTERSIZEMOVE, OnEnterSizeMove)
         MESSAGE_HANDLER(WM_EXITSIZEMOVE, OnExitSizeMove)
+        MESSAGE_HANDLER(WM_NCLBUTTONDOWN, OnNcLButtonDown)
         MESSAGE_HANDLER(WM_SYSCHAR, OnSysChar)
         MESSAGE_HANDLER(WM_NCRBUTTONUP, OnNcRButtonUp)
         MESSAGE_HANDLER(WM_NCLBUTTONDBLCLK, OnNcLButtonDblClick)