ahaaa, Found out now why they are called differently now in the us, Apparently the idea of the title has always been 4.0 first which indicates digital and computers as that is the underline theme of the movie but apparently The American Folk as always did not get the title and so the different title for the US folk as apparently most of them do not even realise the plot line and what is going and only know of what mainly happens.
Oh dear, poor chaps over there (just seen it on tv)
.
Live Free or Die Hard (2007)
aka "Die Hard: Reset" - USA (working title)
aka "Die Hard: Tears of the Sun" - USA (working title)
aka "Die Hard 4" - USA (working title)
aka "Die Hard 4.0" - USA (working title), Denmark, Australia, UK, Finland, Japan, Netherlands, Sweden
aka "Die Hard 4: Die Hardest" - USA (working title)
lol
aka "Die Hard: Working" (2007)