group membership needed for looking at network usage?

From: frwarner (frankwarner4499_at_yahoo.com)
Date: 11/05/05 

Date: 5 Nov 2005 02:04:25 -0800

Does a user need to belong to a certain group to be allowed to start a
program that shows network load (like knemo)? Some of my users can and
some can't, don't know why not.