In my game, I used to put low values (like .3f) in the Application.Scheduler.TimeScale property in order to give my entire game a kind of slow motion effect. This used to work perfectly (in v1.6.2), with the timescale affecting particle effects, actions, schedules etc.
In 1.7.1 however, it seems that GameView.Scheduler.TimeScale (which I assume is the replacement I should use) is not affecting all things anymore. The particle effects are still ok, but all actions that were previously started (like CCMoveTo) are not reflecting the TimeScale.
(I'm using iOS and the simulator.)