I don´t know if this question really belongs here, but here I go. So I´ve been making this (for now) really simple model and I hit a snag. When I select all the faces and hit subdivide (not the modifier), it subdivides only a few and when I try it face by face, it divides one, maybe two of them and for the rest it just adds verticles along the sides). I already tried to look for doubles and everything.
I modeled this one thing (from the same backup file) before and didn´t have this problem.
Here´s a pic of what I mean: