Add INotifyPropertyChanged to QuickClassBrowser.EntityItem.

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/QuickClassBrowser.cs

@@ -28,7 +28,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 		/// <summary>
 		/// ViewModel used for combobox items.
 		/// </summary>
-		class EntityItem : IComparable<EntityItem>
+		class EntityItem : IComparable<EntityItem>, System.ComponentModel.INotifyPropertyChanged
 		{
 			IEntity entity;
 			IImage image;
@@ -96,6 +96,14 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			{
 				return text;
 			}
+			
+			// I'm not sure if it actually was a leak or caused by something else, but I saw QCB.EntityItem being alive for longer
+			// than it should when looking at the heap with WinDbg.
+			// Maybe this was caused by http://support.microsoft.com/kb/938416/en-us, so I'm adding INotifyPropertyChanged to be sure.
+			event System.ComponentModel.PropertyChangedEventHandler System.ComponentModel.INotifyPropertyChanged.PropertyChanged {
+				add { }
+				remove { }
+			}
 		}
 		
 		public QuickClassBrowser()

src/Main/Base/Project/Src/Gui/Dialogs/SharpDevelopAboutPanels.cs

@@ -80,6 +80,11 @@ namespace ICSharpCode.SharpDevelop.Gui
 			#if DEBUG
 			if (e.KeyData == (Keys.Control | Keys.Shift | Keys.E)) {
 				throw new ClownFishException();
+			} else if (e.KeyData == (Keys.Control | Keys.Shift | Keys.G)) {
+				GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
+				GC.WaitForPendingFinalizers();
+				GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
+				versionInfoTextBox.Text = GetVersionInformationString();
 			}
 			#endif
 		}