Index: /trunk/src/VBox/Frontends/VBoxSDL/VBoxSDL.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VBoxSDL/VBoxSDL.cpp	(revision 412)
+++ /trunk/src/VBox/Frontends/VBoxSDL/VBoxSDL.cpp	(revision 413)
@@ -2261,10 +2261,5 @@
 
                 Assert(gpFrameBuffer);
-                /*
-                 * Lock the framebuffer, perform the update and lock again
-                 */
-                gpFrameBuffer->Lock();
                 gpFrameBuffer->update(x, y, w, h, true /* fGuestRelative */);
-                gpFrameBuffer->Unlock();
 
                 #undef DECODEX