The IP address in question is mine (IT Staff). Netflow is showing a large, consistent amount of traffic from my machine to multiple workstations on our internal network (on multiple subnets). When I investigate further I see the traffic is a set amount on the hour. I've double-checked that my pc is not sharing any files and don't see any disk activity indicating read/writes, etc. The traffic amount is in the range of 1.2 GB to 4.2 GB per day. Yesterday I was out of the office and Netflow is showing my computer moved 1.7 GB of traffic. When I disconnect my system from the network (pull the network cable) the traffic settles down. Any ideas of where to start tracking this down? Another bit of information. I run multiple tools from my desktop (Active Directory management, AntiVirus management, etc.).