For me, a switch to compiz-fusion caused the problem you described. My system is up-to-date, running with nvidia-glx-new drivers and is using a compiz-fusion repository being updated daily.
I just switched from nvidia-glx to nvidia-glx-new on another machine also having compiz-fusion installed. In both cases the bug did not appear. So I have 2 systems with same drivers and same software, one showing the bug, one without any problems. -- With desktop effects enabled when using gksu system gets grey and only responds to keyboard https://bugs.launchpad.net/bugs/106008 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs