I had the same problem. Solved it by executing "sudo chown -R $USER.$USER .local/" in my home directory. Is this okay?
My .local/ diretory was owned by root.root. In the .local/ there were references to google-earth. Maybe there is a problem with that package? -- mouse right click and open with other applications does not work in gnome https://launchpad.net/bugs/57380 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
