Since when does installing take hours? :O
By the way, games like Final Fantasy XIII and God of War III come in dual layered Blu-Ray Discs and they don't require any installs... and God of War III doesn't even have any loading times...
Will L.A Noire require an install even though it comes in just a single layered BD? and will it take hours to complete that mandatory install if there's any?
The PS3 has a 2x CLV BD. It reads dual-layer discs at the same speed. The issue with developers requiring installs is because of seek times I believe. Developers can either duplicate assets on the disc multiple times to make streaming data quicker or have a mandatory install.