In fact, the bug is slightly different than what I thought: in Desktop 1 Open Firefox, open two tabs do File-Quit but do not answer to the confirm dialog box (forget it)
in Destop 2: Open a new Firefox window If you chose File/Quit, nothing seems to happen (in fact, a second hidden confirm dialog box appears in the background of Desktop 1 instead of appearing on top of Desktop 2) This is why the File/Quit menu seemed unresponsive. -- file quit does not work in firefox https://launchpad.net/bugs/84600 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs