Comment 7 for bug 401499

Ok, now I've found out what btmp is. It belongs to root, but isn't readable through log viewer, although it's readable for others. I wonder if a chmod to 640 makes the message in log viewer go away?
References:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=326028
http://ubuntuforums.org/showthread.php?p=7600500
https://bugs.launchpad.net/ubuntu/+source/gnome-utils/+bug/374320