If a movie upsets this many people (check the reviews below), there must be something to it. Perhaps people are reacting to the insidiousness of the world of corporate espionage, pornography, lovelessness, pleasurelessness, etc. on display in every corner of the movie. Although its final 30 minutes or so veer toward incoherence--the meaning of what ultimately happens seems less interesting as a resolution than in (for example) "Mulholland Drive"--it's a cool, controlled, provocative rethinking of the modern techno thriller. It's a far more subtle and nuanced movie than the kind of head trip movies that kids go for these days ("Requiem for a Dream," bleh!), and the Sonic Youth score and cinematography are terrific.
I was originally attracted to the film on the strengths of Assayas' other films--all three I've seen ("Irma Vep", "Late August/Early Sept.", "Les Destinees Sentimentales") excellent and each in its own way unique. His work is eclectic and unpredictable in the best sense, seemingly at ease with big or small productions--in the great tradition of Jonathan Demme or Michael Winterbottom or Louis Malle. This is probably the only one of his films so far that could have attracted an American audience, but the chilliness of its surfaces apparently has scared a few too many away. It's a pity, because the film's definitely worth seeing.