I hosted my own server and then my Norton Internet Security blocked a DoS attack from an IP, I checked all the IP's in my server and a guy who's called "BMASTER" did it. His IP was 81.173.128.110 (cable-81-173-128-110.netcologne.de), it was also probaly a faker. If Nimrod wants to ban him from the serverlist or a J2O admin wants to check out who he really is, he can do it immediately. If you're not sure that this guy was really a DoS attacker, that's the message I found at the log viewer:

Attempted Intrusion "MSSQL_Packet_DoS" from your machine against 81.173.128.110 was detected and blocked

Remember to ban him from your servers, also.