diff -ur original/src/video/windx5/SDL_dx5video.c patched/src/video/windx5/SDL_dx5video.c
--- original/src/video/windx5/SDL_dx5video.c	Sun Dec 30 20:48:14 2007
+++ patched/src/video/windx5/SDL_dx5video.c	Sat Jun 20 21:36:02 2009
@@ -1641,6 +1641,7 @@
 struct private_hwdata {
 	LPDIRECTDRAWSURFACE3 dd_surface;
 	LPDIRECTDRAWSURFACE3 dd_writebuf;
+	void *buffer;
 };
 
 static int DX5_AllocDDSurface(_THIS, SDL_Surface *surface, 
@@ -1818,6 +1819,7 @@
 		}
 	}
 	surface->hwdata->dd_writebuf = dd_surface3;
+	surface->hwdata->buffer = NULL;
 
 	/* We're ready to go! */
 	return(0);
@@ -2067,6 +2069,9 @@
 			((ddsd.dwWidth-surface->w)/2)*
 					surface->format->BytesPerPixel;
 	}
+	if ( !surface->hwdata->buffer && surface->pixels ) {
+		surface->hwdata->buffer = surface->pixels;
+	}
 	surface->pixels = ddsd.lpSurface;
 	return(0);
 }
@@ -2107,6 +2112,9 @@
 	if ( surface->hwdata ) {
 		if ( surface->hwdata->dd_surface != SDL_primary ) {
 			IDirectDrawSurface3_Release(surface->hwdata->dd_surface);
+		}
+		if ( surface->hwdata->buffer ) {
+			SDL_free(surface->hwdata->buffer);
 		}
 		SDL_free(surface->hwdata);
 		surface->hwdata = NULL;