Help !!!

i need some help!!!

every time i connect to a ETQW server when i check in my console i get the following:

"sending challenge to 192.168.69.69:58008
received challenge response 0x5b9a45a3 from 192.168.187.187:58005
sending connect to 192.168.187.187:58005 with challenge 0x5b9a45a3
bad challenge."

i have no idea what this means, or how to fix it.

help!!