XML : Are there problems with my folders?

Earlier, I asked this question: Landscape mode for app?

Where I had a directory for each and every layout, but the layout in the layout-land directory wasn't showing up when positioning my layout in landscape orientation.

So, someone suggested to me that it maybe that the

Layout-normal directories are overriding my regular layout-land directories. Is this true?

If so, will any other of my layout folders get overriding? What is the purpose of layout-normal in the first place then anyway?

Thanks,

Ruchir