MenuBar doesn't show up in full screen mode

I'm trying to use the full screen mode in Lion, but I can't get the menubar to show up at all. I push my cursor up to the top of the screen, wait a second, and nothing. Some apps will seem like they're trying to do something (e.g., Safari will change what's visible in the toolbar), but in no case does the menubar actually appear. Needless to say, I really effectively can't use full screen mode this way. Any suggestions on how to get the menubar to show up?

Solution 1:

This was a known issue.

Please download the 10.7.2 OS X Lion update (Apple Menu > Software Update).

http://support.apple.com/kb/HT4767

The OS X Lion v10.7.2 Update includes Safari 5.1.1 as well as fixes that:

...
Address an issue that may cause the menu bar to not appear in full screen apps.
...