Activity monitor problems

Avast sends network data to the “Activity Monitor” that turns useless the network graphic, I used to monitor my network traffic by the activity monitor, but now i cant because the data is not corresponding the real network usage.

http://s4.postimg.org/k8s2n074d/Captura_de_pantalla_2013_05_18_a_la_s_22_53_23.png

Will this be fixed?