Erro nos graficos do mrtg

Tenho um server de wireless rodando debian 4
recentemente instalei o mrtg seguindo um hotw que ache na net mas, percebi que o mrtg não ta recebendo os dados corretamente estou postanto parte da minha conf pra ve sem tem algo errado, pois ja pesquisei muito e não encontro solução

###mrtg.cfg
Interval: 5
Language:brazilian
RunAsDaemon: No
WorkDir: /var/www/html//mrtg

Target[192.168.10.89]:`/etc/mrtg/192.168.10.3.sh`
Title[192.168.10.89]: "Trafego do Cliente"
PageTop[192.168.10.89]: "Trafego do Cliente"
Options[192.168.10.89]: growright, bits, nobanner
WithPeak[192.168.10.89]: ymw
MaxBytes[192.168.10.89]:7250

Target[192.168.10.5]:`/etc/mrtg/192.168.10.4.sh`
Title[192.168.10.5]: "Trafego do Cliente"
PageTop[192.168.10.5]: "Trafego do Cliente"
Options[192.168.10.5]: growright, bits, nobanner
WithPeak[192.168.10.5]: ymw
MaxBytes[192.168.10.5]:14500

Target[192.168.10.75]:`/etc/mrtg/192.168.10.5.sh`
Title[192.168.10.75]: "Trafego do Cliente"
PageTop[192.168.10.75]: "Trafego do Cliente"
Options[192.168.10.75]: growright, bits, nobanner
WithPeak[192.168.10.75]: ymw
MaxBytes[192.168.10.75]:7250

####SCRIPTS
down=`iptables -t mangle -L POSTROUTING -nvx | awk '/192.168.10.3/{print $2 }'`
up=`iptables -t mangle -L POSTROUTING -nvx | awk '/192.168.10.3/{print $2 }'`
echo "$down"
echo "$up"

down=`iptables -t mangle -L POSTROUTING -nvx | awk '/192.168.10.4/{print $2 }'`
up=`iptables -t mangle -L POSTROUTING -nvx | awk '/192.168.10.3/{print $2 }'`
echo "$down"
echo "$up"

down=`iptables -t mangle -L POSTROUTING -nvx | awk '/192.168.10.5/{print $2 }'`
up=`iptables -t mangle -L POSTROUTING -nvx | awk '/192.168.10.3/{print $2 }'`
echo "$down"
echo "$up"

#####Retorno dos scripts
nplfm:~# /etc/mrtg/./192.168.10.3.sh
86704998
86704998

nplfm:~# /etc/mrtg/./192.168.10.4.sh
86725838
86725838

nplfm:~# /etc/mrtg/./192.168.10.5.sh
86733911
86733911
nplfm:~#

#### Grafico mostrado em anexo
Fico muito grato se alguem puder me ajudar
Abraço a todos!