Problem solved!! HavocRise found a solution for this problem. I'll reproduce his message in Ubuntuforums:
"I fixed it! Check the permissions on your ~/.config/autostart/ folder. Mine was set to root as the owner and my account only had read access. That is why it wouldn't save any changes. Hope this helps!" -- Can't change gnome session properties https://bugs.launchpad.net/bugs/112735 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug contact for gnome-session in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs