Incompetence = Malice
"Never ascribe to malice that which is adequately explained by stupidity." -- Napolean Bonaparte
"Any sufficiently advanced technology is indistinguishable from magic." -- Clarke's Third Law
"Any sufficiently advanced incompetence is indistinguishable from malice." -- The Napolean-Clarke Law
In the case of George W. Bush that pretty much covers it. It really doesn't matter whether Bush operates from malice, indifference or simple incompetence. At the levels of failure that Bush has achieved, they are simply indistinguishable.