[admin (no pm's please)]

The online user list is now being cached for the forum and index page for 1 minute.

No one really needs this updated more often and it should speed things up.

[MarkB]

Is this by default on all forums?

[admin (no pm's please)]

Yes.

Note that the minute setting has nothing do to with your own setting in the admin panel controlling reporting periods. It is simply a caching time between seeing changes.