Hello!
I don't actually have this problem but my friend across the road does, the servers don't seem to ping and obviously, i thought he hadn't forwarded his ports correctly; so i went over there and i'm pretty sure i set his router up correctly. However, the problem still prevailed even after re-installing. So i did some quick searches:
http://forums.soldat.pl/index.php?topic=14662.0 this person has the exact same problem, yet no one answered so does anyone know how to fix it?
-When requesting servers he can see them but they don't ping. (they all have 9999)
-He can join them and play for a few seconds before disconnecting and he has "0" ping.
-He is like the other topic, on a wifi modem.
So im guessing its a wifi thing? Anyone know anything about this?