On Thu, 12 Nov 2009 11:40:52 -0500, "Jack"
wrote:

For the life of me, I cannot figure out what I am doing wrong while hanging
the door. The bottom of the door hits the striker side first with about an
1" gap at the top. The hinge side is plumb. The walls appear to be plumb
and flat. The door slab itself is not warped.

I've never installed a door before, so any advice would be appreciated.

Check that the jamb header is level...

Are you using shims to square the jamb frame in the opening?