Over on the official Playstation blog, there is a post saying that Little Big Planet will be delayed till the week of October 27th.  The reason for the delay is two music tracks contain quotes from the Koran, Sony has taken immediate action and has apologized for any offense it may have caused.

During the review process prior to the release of LittleBigPlanet, it has been brought to our attention that one of the background music tracks licensed from a record label for use in the game contains two expressions that can be found in the Qur’an. We have taken immediate action to rectify this and we sincerely apologize for any offense that this may have caused.

We will begin shipping LittleBigPlanet to retail in North America the week of October 27th. Sorry for the delay, and rest assured, we are doing everything we can to get LittleBigPlanet to you as soon as possible.
http://blog.us.playstation.com/2008/10/17/littlebigplanet-release-update/.