On 1/5/09, zapcat <zapcat at speakeasy.net> wrote: > > for the "housekeeping" chores that OS X does in the wee hours, does > it matter whether apps are left running or not, either idle, or > performing chores? > > IOW, will the cron tasks happen properly and their result just as > good with running apps, or is it better of there are no apps running > at all (aside from the OS itself)? No, it doesn't matter. Those tasks are run by launchd and periodic in Tiger and Leopard. The connection to cron is long gone.