Main Maya menu disappears

This seems to be a common problem some of my friends have experienced, even some on OSX.
Anyway the quick workaround was to just blow away your ~/Documents/maya/2012-x64/prefs/userPrefs.mel file.

However here is a better fix I came up with which does not seem to be documented:
--- prefs.old/userPrefs.mel 2012-12-04 12:00:52.029427000 +0900
+++ prefs/userPrefs.mel 2012-12-04 12:15:29.213427000 +0900
@@ -972,7 +972,7 @@
  -iv "loftPolys" 0
  -iv "mainMenuBarNeedsToBeTraversedWhenHotkeyEditorIsOpened" 1
  -iv "mainWindowDisable" 0
- -iv "mainWindowMenubarVis" 0
+ -iv "mainWindowMenubarVis" 1
  -iv "mainWindowTitleBarVis" 1
  -fv "manipGlobalScale" 1.5;
 optionVar