Small problem (I think). When I use border select “b” at some vertices in, lets say, a cylinder, viewing it from the side in an orthographic viewpoint, it doesn’t select any vertices that are “behind”, only the ones I can see. Wtf?
In the Header of your 3D window, when you’re in editmode, you have 3 buttons to choose vertice, edge or face selection mode, after that 3 buttons you have a button that prevent you from select non visible parts of your mesh if you’re in solid or shaded view mode. Turn it off.