Same for me. It seems not properly a full screen window in F11 style, but clicking F11 twice restore the window. Perhaps have you Compiz enabled, like me? On an Asus eeepc 901 with Ubuntu Hardy Installed I have the same behaviour on every window, but reloading Compiz solve the problem.
Mozilla/5.0 (X11; U; Linux i686; it; rv:1.9.0.3) Gecko/2008092515 Ubuntu/8.10 (intrepid) Firefox/3.0.3 -- [intrepid] firefox 3 starts in full screen mode https://bugs.launchpad.net/bugs/270400 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs