This parameter that you talked about works, but, unfortunately, not for all languages. I tested it in VS2010, and when I uncheck the "Navigation bar" checkbox in the "All languages" section, it hides the navigation bar in C # files, but not in VB. If you look more closely at the options for other languages, you will see that the checkbox for the navigation bar is blocked in VB, CSS, F # and some others. You can check the beta version of Visual Studio 11, maybe it has been changed?
EDIT: http://social.msdn.microsoft.com/Forums/en-US/vbide/thread/651e378e-7059-49c6-ade5-8e56c9085c12/ - unfortunately, I found a familiar answer here.
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