OK, our company assign each one of us an IP address. One day while being on the web, I got a message saying that some other computer is using the same IP address. Checking whether that's possible, I went to the computer next to me and enter its IP address as mine and it's fine so I know it's possible that someone is using my IP address. We have an IT person and I asked him who else is using my IP address. He doesn't know. All he can do is check to see if he assigned the same IP address to more than one person. So my question is this: I thought the guy who's in control of giving us the IP address and running our server can see everything like who's computer is using which IP address when and where. If he can't keep track of that, then how can he keep track who is doing what (I mean if there's illegal things going). Can't the IT person just look at a particular IP address and know where that IP address has been? And can't he know that the IP address is coming from more than one computer if someone is infact using my IP address? If he can't then someone can get me in big dodo using my IP address right? Anyway, our IT guys don't have an answer for me. He just ask me to see if it goes away .