I managed to capture a screenshot visiting Launchpad where this graying happened.
** Attachment added: "firefox3-launchpad-gray-irresponsive.png" http://launchpadlibrarian.net/16379922/firefox3-launchpad-gray-irresponsive.png -- graying window in Firefox 3 https://bugs.launchpad.net/bugs/226546 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