I am running OS X 10.8.2 on a MacBook Pro with a 27" Cinema Display. Just this week I noticed that when I switch over to Safari the Main Menu Bar (not the Safari menu bar) disappears. I have checked to make sure that I am not in full screen mode. I also checked the desktop settings and don't see anything that would turn that off. The menu bar shows when I am in any application other than Safari. Again, this is the main menu bar, not the safari menu bar.
Thanks in advance for any help.