diff -r f8445d00613d -r 435e2d8ee580 controls/DurationCellEditor.py
--- a/controls/DurationCellEditor.py	Sun Mar 18 15:37:04 2012 +0100
+++ b/controls/DurationCellEditor.py	Sun Mar 18 18:11:46 2012 +0100
@@ -71,7 +71,10 @@
     def __init__(self, parent):
         self._init_ctrls(parent)
         
+        self.Default = None
+        
     def SetValue(self, value):
+        self.Default = value
         self.Duration.SetValue(value)
     
     def GetValue(self):
@@ -94,9 +97,11 @@
 
     def OnDurationChar(self, event):
         keycode = event.GetKeyCode()
-        if keycode in [wx.WXK_RETURN, wx.WXK_TAB, wx.WXK_ESCAPE]:
+        if keycode in [wx.WXK_RETURN, wx.WXK_TAB]:
             self.Parent.Parent.ProcessEvent(event)
-            self.Parent.Parent.SetFocus()
+        elif keycode == wx.WXK_ESCAPE:
+            self.Duration.SetValue(self.Default)
+            self.Parent.Parent.CloseEditControl()
         else:
             event.Skip()