diff -r dc3531e49e4c -r 8e9daf967406 project_files/HedgewarsMobile/Classes/OverlayViewController.m
--- a/project_files/HedgewarsMobile/Classes/OverlayViewController.m	Sat Aug 28 05:35:02 2010 +0200
+++ b/project_files/HedgewarsMobile/Classes/OverlayViewController.m	Sun Aug 29 16:55:27 2010 +0200
@@ -135,23 +135,21 @@
     sdlwindow = display->windows;
 }
 
+-(void) didReceiveMemoryWarning {
+    [super didReceiveMemoryWarning];
+    if (self.popupMenu.view.superview == nil)
+        self.popupMenu = nil;
+    MSG_MEMCLEAN();
+}
+
 -(void) viewDidUnload {
-    // only object initialized in viewDidLoad should be here
+    // only objects initialized in viewDidLoad should be here
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
     dimTimer = nil;
     MSG_DIDUNLOAD();
     [super viewDidUnload];
 }
 
--(void) didReceiveMemoryWarning {
-    // Releases the view if it doesn't have a superview.
-    [super didReceiveMemoryWarning];
-    // Release any cached data, images, etc that aren't in use.
-    if (popupMenu.view.superview == nil)
-        popupMenu = nil;
-    MSG_MEMCLEAN();
-}
-
-
 -(void) dealloc {
     [popupMenu release];
     [popoverController release];