It means there was a problem with your connection, a temporary fix is to be killed or suicide however this indicates you may need to port forward or place your platform in a DMZ, having a physical connection to your router helps with stability issues too.
For portforwarding these are the ports you need
If you're on PC
TCP: 80, 443, 9988, 20000-29999, 22990, 17502, 42127
UDP: 3659, 14000-14016, 22990-23006, 25200-25300
If you are playing on PS3, please enable the following online ports on your connection:
TCP: 80, 443, 9988, 10000-19999, 17502, 42127
UDP: 3659, 14000-14016
If you are playing on Xbox 360, please enable the following online ports on your connection:
TCP: 53, 88, 3074
UDP: 53, 88, 3074
For a guide specific to your router refer to http://portforward.com/ [portforward.com]
It has router specific guides!
Hope this helps
Just realised you will need to set your platform with a static IP luckily that link I supplied also has guides for that too!
