You're not a member of the "powersave" user group?

My laptop recently started popping up this message that it couldn't run powersaved properly because i'm not part of the "powersave" group. I haven't done ANYTHING on this system as far as editing or deleting groups. I don't have "powersave" listed as a group anywhere (nor can I create one - group editor says the group can be 2-8 characters long). Is this supposed to be there? If so, what properties is that group normally assigned? If it's something else, what would be causing this message to pop up?