It's deffo not fixed by a long shot. I just emptied a clip at someone and he turned, shot me once and run off. It's rubbish. Also sometimes players seem to run around corners firing. I've got 0.0001 of a second to react. On their screen (watching the kill via killcam) they were around the corner saw me, aimed and fired. This again is the lag compensation making it impossible to play mw3 online.