Does not seem to be caused by gnome-screensaver (it happened with xscreensaver as well). Workrave has to be fixed here.
** Changed in: gnome-screensaver (Ubuntu) Status: Needs Info => Rejected -- workrave hangs after unlocking with input blocked https://launchpad.net/bugs/20070 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs