The cache is built on a lot of items based on "at that instant"... In any case, these items ALL have a set period of time that they work with...
Top posters only shows the top people (unless you set it to display more).
WOL only shows like 5 people, the full wol page is shown in real time, so shows everyone at that instant you load the page (afaik)
forum stats is basically static
public calendar is ultimately static as well.
