Just for some additional info, I had previously performed a Lucid update, and also installed the Sugar package when I noticed this problem occurring. So cannot be sure whether it was Lucid or Sugar that caused the problem. I have since re-installed Linux to correct the problem. if no definitive answer can be found, happy for this to be closed as a one off incident. Many thanks.
-- Unable to click buttons when screen effects active https://bugs.launchpad.net/bugs/519112 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