wireframes problems

[mushimushi]

am using ATI radeon x800, using OpenGL, 2g of ram, i dont know why am getting this error, i dont why the missing edges. anyone know how can i fix that, other than changing my video card :P

[Brent]

I think you need to check your mesh,it looks like there are un attached verts in your front view.

[anuradha]

try doing the same from the beging in a new scene