It is a misnomer but somewhat of an accurate description. Task like this one and WuProp etc are NCI (non computer intensive). They require very little CPU usage to do their thing. Things like the Quake Catcher monitoring programs are also in the category. You can run all you can get and it doesn't affect your crunching output.
This leads me to believe you aren't running wuprop either. You should be. Everyone on the team should be too. Free credits for you and the team!
http://wuprop.boinc-af.org/