"That seems to not be a firefox bug." others persons believe the opposite. Is there a firefox hacker here ?!
And indeed this bug occur only at http://www.google.com/tools/firefox/ page -- Can't allow sites for adding extensions https://launchpad.net/bugs/89071 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs