I agree, most of the so so aspects were tolerable, but why go through the majority of the film creating a bond with his daugter only to have 'the boy' pop back up again.

The bit I felt most dissappointed with was where were the machines were dying at the end. Is there a way to make it look like the machine just fall as a results of the virus, rather than see loads of bravado from the army as they blast the thing with a rocket launcher? The message was like 'the good 'ol army did it again!!' which wasn't the case.