See: https://bugs.kde.org/show_bug.cgi?id=190412 https://bugs.kde.org/show_bug.cgi?id=193085 -- Firefox: Ctrl-W doesn't close window or tab https://bugs.launchpad.net/bugs/378502 You received this bug notification because you are a member of Mozilla Bugs, which is subscribed to firefox-3.0 in ubuntu.