Faster N9 is a mod developed by traysh, an active member of talk.maemo.org. The author claims that the latest, stable release of FasterN9 is safe to install. Visit the official FasterN9 thread here.
The mod will make your Nokia N9 silky smooth by changing priorities of the phone's processes. As a result, N9 is more responsive, the appl load faster and the system less laggy in transitions and animations. From my experience, the mod also makes the phone less battery-hungry (though it might just be an initial inpression).
Have a look at a video presenting the changes:
The video, however, shows a phone that has been both overclocked and has FasterN9 installed, so it may not give you the actual impression of what FasterN9 really is.
Known FasterN9 bugs:
- No system sounds will work (including alarm) after installation until first reboot
- when using spotify in offline mode and sports tracker, the music stutters badly