I had the same issue. Reformatting and reinstalling, in this case, is like killing a fly with a nuclear weapon.
Restart your machine, then edit the following file in a text editor: /home/(your-username-here)/.gconf/apps/gnome-screensaver/%gconf.xml Change the value under the them section to use a non-buggy screensaver, e.g. <stringvalue>screensavers-endgame</stringvalue> Now save and close the file, then start the Screensaver app, it will be on the one you specified and you are free to choose others. Just don't pick the molecule one again! -- Screensaver locks up when using molecules https://bugs.launchpad.net/bugs/117482 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