Here is a write-up from symantec:
Norton Internet Security has caught a number of attempts to enter my system which NIS has identified as using the Bla Trojan Horse. I've done two scans with NAV 2004, fully updated, and one from Trend Micro's site. All have said the system is free of viruses. Did a "Visual Tracking" on the last attempt and it gave an IP address of 126.96.36.199 in Seattle, WA. Network was Comcast Cable Comminications, Node Name was c-24-16-63-client.comcast.net. Other ifo was Comcast Cable Communications, 3 Executive Campus, 5th Floor, Cherry Hill, NJ 08002. What does all this tell me and what can I do with it to try and end these intrusions?