Thanks, I'm going to download it and check it out. In what I think proved to be a resolution to my problem, I paid a bit closer of attention to the log from Ethereal and noticed the port the traffic was coming across. Symantec System Center uses that port for pushing updates and pulling update status from remote clients. After I deleted the entry for the offending party out of System Center's console, the bashing stopped. The client computer only had about 20MB of disk space left and what I'm assuming was going on was that SSC was trying to push all the backlogged updates out to the client and was getting everything thrown right back. Sound plausible? Regardless, the trash on the network seems to have cleared up. I really appreciate such a helpful welcome to A.O. Hope I can return the favor as I get a bit smarter.