Symantec OS attack, co sie dzieje ?

[SID: 20386] OS Attack: MS RPCSS Attack CVE-2004-0116 2 detected.
Traffic has been blocked from this application: C:\Windows\System32\svchost.exe

Traffic from IP address 94.248.219.43 is blocked from 2012-12-28 1602 to 2012-12-28 1602.

Active Response that started at 12/28/2012 1602 is disengaged. The traffic from IP address 94.248.219.43 was blocked for 180 second(s).

na przestrzeni dwoch dni mam to 8 razy...
co to sie dzieje ?

tu jakas informacja od producenta:
http://www.symantec.com/security_response/attacksignatures/detail.jsp?asid=20386

ale ja mam WIndows 7....