I am also facing the same problem, Its every where. But i found a workaround to get working with it. if in a window you are unable to click some where just move the window around and you'll able to click.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/773014 Title: Natty: GUI occasionally does not register mouse / touchpad clicks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs