Buenas tengo un pequeño problema tengo el proceso mailman que me sube mucho el load del servidor hay alguna manera de controlar esto o mejor dicho solucionarlo

root@server1 [/etc/cron.daily]# ps U mailman
PID TTY STAT TIME COMMAND
2861 ? Ss 0:00 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/mailmanctl -s start
2869 ? S 0:00 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Arc
2870 ? S 1:48 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Bou
2871 ? S 0:01 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Com
2872 ? S 0:41 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Inc
2873 ? S 0:00 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=New
2874 ? S 5:49 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Out
2880 ? S 14:02 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Vir
2881 ? S 0:01 /usr/local/bin/python2.4 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --runner=Ret

Si alguien me puede echar una mano se lo agradecere mucho
un saludo