From what I understand the those culturally french haven't made much attempt to change and incorporate there immagrants and foreigners into their country and culture. Not that is should be forced, but simply encouraged. In some respects this is their fault. The French Gov't and culture is directly and enthusiastically adverse to change. And this is a widely known fact. Most obvious are the laws requiring cinemas to show a certain percantage of French films. Or how they refuse to allow muslim children to wear head scarfs in school. NONE of this justifies the lawlessness and general disregaurd for others property or these muslim communities not realizing that these young teenage punks had it coming when they:
A. Tried stealing auto parts IIRC
B. Jumped the fence of a power subsystem to evade police.
The headscarf thing was really about having a secular culture in schools; it's not something imposed on just muslim children. I'm not sure it'd be a/the catalyst for rioting, either; not only is it quite a long time since it was passed, the opposition for it was damaged by the taking of French reporters hostage in Iraq (their captors wanted the ban repealed).
The cinemas thing is about protecting their own culture (likewise music) from the overwhelming pressure of, for example, Hollywood films. I don't think that's a good example to cite of lacking integration; in fact I'd say it's a more positive thing, that it helps preserve a national identity in a homogenized world.
What is a problem, is social deprivation and isolation; packaging immigrant communities in insular high-rise blocks or housing estates, a lack of investment in improving facilities & eduction, a lack of suitable entry level jobs and discrimination against ethnic candidates, etc. If people feel physically and socially isolated, then they'll feel voiceless and be more likely to resort to aggression. But most societal groups can easily survive the former sort of cultural exclusion by forming their own nascent culture; in fact I think that's exactly what happens in France (it's not like a lack of the latest Will Smith movie or 50 cent album is going to make French immigrants feel isolated, is it?).
There's no excuse to justify running out and burning cars, of course. But you have to still examine the reasons why this sort of situation can keep burning and spreading, and why people feel they have a pretext to do so. Otherwise you'll continually be addressing the symptoms and not the actual problem.
