Index: Core/Common/src/Core.Common.Gui/Forms/PropertyGridView/PropertyGridView.cs
===================================================================
diff -u -rcf4f627d49e3c133f1017502b7fc355d40982032 -r53f640e7100d9527310acb18280120658f4b2182
--- Core/Common/src/Core.Common.Gui/Forms/PropertyGridView/PropertyGridView.cs	(.../PropertyGridView.cs)	(revision cf4f627d49e3c133f1017502b7fc355d40982032)
+++ Core/Common/src/Core.Common.Gui/Forms/PropertyGridView/PropertyGridView.cs	(.../PropertyGridView.cs)	(revision 53f640e7100d9527310acb18280120658f4b2182)
@@ -114,6 +114,12 @@
             }
             set
             {
+                // Prevent redundant updates
+                if (data != null && data.Equals(value))
+                {
+                    return;
+                }
+
                 if (observable != null)
                 {
                     observable.Detach(this);
Index: Core/Common/test/Core.Common.Gui.Test/Forms/PropertyGridView/PropertyGridViewTest.cs
===================================================================
diff -u -rcf4f627d49e3c133f1017502b7fc355d40982032 -r53f640e7100d9527310acb18280120658f4b2182
--- Core/Common/test/Core.Common.Gui.Test/Forms/PropertyGridView/PropertyGridViewTest.cs	(.../PropertyGridViewTest.cs)	(revision cf4f627d49e3c133f1017502b7fc355d40982032)
+++ Core/Common/test/Core.Common.Gui.Test/Forms/PropertyGridView/PropertyGridViewTest.cs	(.../PropertyGridViewTest.cs)	(revision 53f640e7100d9527310acb18280120658f4b2182)
@@ -61,5 +61,30 @@
             }
             mockRepository.VerifyAll();
         }
+
+        [Test]
+        public void Data_SetSameDataObject_NoRedundantViewUpdate()
+        {
+            // Setup
+            var mockRepository = new MockRepository();
+            var propertyResolverStub = mockRepository.Stub<IPropertyResolver>();
+            mockRepository.ReplayAll();
+
+            var dataObject = new object();
+
+            using (var propertyGridView = new Gui.Forms.PropertyGridView.PropertyGridView(propertyResolverStub))
+            {
+                propertyGridView.Data = dataObject;
+
+                var selectedObject = propertyGridView.SelectedObject;
+
+                // Call
+                propertyGridView.Data = dataObject;
+
+                // Assert
+                Assert.AreSame(selectedObject, propertyGridView.SelectedObject);
+            }
+            mockRepository.VerifyAll();
+        }
     }
 }
\ No newline at end of file