Could not recreate this behavior with Firefox 2.0.0.1 on Feisty with Metacity. When opening a menu near the right edge of the left monitor, the menu opens on the right monitor.
-- Firefox 2.0 positions menus bad in Xinerama mode https://launchpad.net/bugs/71306 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs