With Lion the briefcase Library is not visible of default, but with the free application Lucien we can easily make now her visible and to manage her/it to the best.
On SlideToMac we have already explained how this briefcase to make Bookstore visible, but with Lucien we have different options in more.
Thanks to this utility, in fact, we can open the briefcase Library leaving her/it invisible, in such way to be able to effect interventions to the flight. In this way we can enter to verify you the state of the preferences and to modify some formulations.
The application is available here.