Two weeks ago I've noticed that despite of that fact my Internet connection is fast my loss and lag are always high(2 at morning and rise till 20 or above at the evening. Lag from 2% at the morning till 6% at the evening) , but only at this server. Maybe someone knows what is going on,and how to correct this thing.
I had the same problem for a few days, installed another Firewall, made a Virus scan, deleted everything Internet-related, cleaned up HDD's, and now it works perfectly. Oh, and if you're using a wireless internet, change the password, it might help. (Helped me at least, someone was stealing my internet >_>)