for graphics - need instaled libgd & gd.pm

if you don't need graphics report - set $graphreport=0 in lightsquid.cfg

please install it manualy or use automatic installation!

Distributive		installer	command	
ASP Linux 10		yum		yum install perl-GD	
Debian "Sarge" 3.1	apt-get		apt-get install libgd-gd2-perl	


in config - two veriables

adjust it for your traffic

$graphmaxuser
$graphmaxall

they define maximum for one user report and all user 
try play with it