I've just installed Ubuntu 12.04 (64 bit). I hate unity, so I use gnome-session-fallback. Everything works fine (OK, not as well as it worked in gnome2...) but if I open a new window, it always appears in the top-left corner corner and its menu bar is behind my top menu bar (with application menu, places, etc.).
How can I fix it? It annoys me a lot. Please help!