I am not sure how many are aware that Insomnia is actually just a re-make of the 1996 Norwegian film Insomnia by Erik Skjoldbjaerg which won prizes at various international film festivals.
So, why the need for a re-make? True, I love Chris Nolan's work, and Memento is my all-time favourite film, so I hope that when Insomnia comes out that he has done it no injustice.
As for the soundtrack, what made the original film so impressive was the haunting, ambient soundtrack composed by Geir Jenssen, probably the leading ambient artist in the world. David Julyan may compose great soundtracks, but the original soundtrack should definitely have been used again. It set the atmosphere, with Geir Jenssen being from the actual city where the original was film. Now the new film has been relocated to the US (why? Nolan's British, isn't he?), your standard Americanization of any decent European film to make it a hit in the US box office, and the score has been changed. I have listened to the soundtrack (and still not seen the film), but if the film is anything like the original, the soundtrack now has none of the same monumental and chilling character that together with the beautiful imagery from within the Arctic Circle provokesd in me when I saw the original. Instead, the score strikes me as a bit bland and the strings don't really fit in, and it's as if I heard it all before in another soundtrack.