Matt Cash is fine.
Yea he's a bit frustrating with how safe he generally plays, but even if he passes square or backwards, at least he's not giving the ball away. I understand it's annoying when moves seem to break down because of him, but there are lots of examples of that being the case with the rest of the team.
I'd argue we waste more time with the ball at Emi Martinez's feet, waiting for a low block team to press him, than Matt Cash does passing the way he does.