I googled it and Interlok (the firm that wrote it) specializes in copy protection. It's found in /Library/StartupItems. If someone with a fairly new clean install of Leopard can look to see if it is installed by default, I'd appreiciate it. According to MacFixit, StartupItems are being deprecated, so I'm wondering what this code does and what applications it's associated with. I also wonder why it clearly is starting for Tiger.