I was just wondering how often do you run Disk Utility, Maintenance Scripts, Update Prebindings, clear your caches, etc.? More specifically, is it possible to do this too often, and what would you say is just the right frequency? Even more specifically, what consequences does cleaning the user cache and cleaning the system cache have? What are prebindings and why do I need to update and redo them? Is there any reason to repair the permissions of OS 9 in disk utility if I never use it? What's a .DS_Store file and is it ok to remove them?