diff -ruN ogrenew.orig/RenderSystems/GL/src/SDL/OgreSDLWindow.cpp ogrenew/RenderSystems/GL/src/SDL/OgreSDLWindow.cpp
--- ogrenew.orig/RenderSystems/GL/src/SDL/OgreSDLWindow.cpp	2006-06-19 14:48:23.000000000 +0400
+++ ogrenew/RenderSystems/GL/src/SDL/OgreSDLWindow.cpp	2006-06-21 15:50:34.000000000 +0400
@@ -57,8 +57,10 @@
 
     SDLWindow::~SDLWindow()
     {
-        if (mScreen != NULL)
-            SDL_FreeSurface(mScreen);
+        // according to http://www.libsdl.org/cgi/docwiki.cgi/SDL_5fSetVideoMode
+        // never free the surface returned from SDL_SetVideoMode
+        /*if (mScreen != NULL)
+            SDL_FreeSurface(mScreen);*/
 
     }
 
diff -ruN ogrenew.orig/RenderSystems/GL/include/OgreSDLWindow.h ogrenew.1/RenderSystems/GL/include/OgreSDLWindow.h
--- ogrenew.orig/RenderSystems/GL/include/OgreSDLWindow.h	2006-06-19 14:48:23.000000000 +0400
+++ ogrenew.1/RenderSystems/GL/include/OgreSDLWindow.h	2006-06-27 15:37:21.000000000 +0400
@@ -70,6 +70,10 @@
         }
 
 		bool requiresTextureFlipping() const { return false; }
+	bool isFullScreen(void) const
+	{
+	    return ( mScreen->flags & SDL_FULLSCREEN ) == SDL_FULLSCREEN;
+	}
     };
 }