I can confirm this behavior in Natty with Eclipse. The windows is read- only and you cannot work any longer. I have no screensaver working, so it seems its related to something else (probably window switching).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/781618 Title: Editor windows enter a read only state on screen locks and workspace changes -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs