Periodic checking (Check every n minutes)
If n is greater than zero, the list
window will automatically check your
list about every n minutes or so. This
makes sure that your list window is as updated as possible, as it
finds people who don't send notification messages when they log in and
out.
The smaller you make n, the more up-to-date your list
window will be -- but checking the list is time-consuming, so you may
not be able to do anything but check your subscriptions if
you make n too small. 15 minutes is a good value for
n.
If n is zero, periodic checking is turned off.
Back to the List Options dialog page.