if someone is using my wireless router for their internet connection. My next door neighbor is a computer technology teacher at a local high school. He's a good neighbor, but very cheap. How can I tell if someone is jumping on my router. I have it WEP protected, but as I understand, that's not always totally secure. I'm using DSL and there are times when my internet gets slow.(late afternoon) I've heard that DSL shouldn't be affected by the number of users on a line like cable. Thanks.