Hi CyberHawk, If you do not remove the event listeners on an object it will not be Garbage Collected and will remain in memory. That means that an ENTER_FRAME handler will keep running. That can affect the memory but also performance of your app. Obviously for persistent interactions (like keys) on the stage you don't need to remove them unless you don't need them anymore. But when you have objects that you plan on creating and removing dynamically (like containers for sections on a site or images in a carousel) you should build a way to remove all the events once you are disposing of that object. You can just add 2 functions to classes that will handle this addAllEvents() and removeAllEvents(). Just make sure all the events added in addAllEvents are removed in removeAllEvents.
But the best way to handle this is to avoid creating garbage in the first place! Use Object Pools where ever possible. Google it, there are vary simple implementations you can apply to your projects. By recycling your objects, like those using BitmapMaterials, you can save yourself a lot of hair lost in debugging memory issues :) The HYPE framework has a lot of Object Pools demo and Lost In Actionscript has a Basic Object Pool class in its repository. ath. Jerome.
