I really don't know how to describe my friends situation technically, but lately her Internet has slowed down to a crawl. She thought her computer was infect, so she brought it to me and I reformatted and updated her PC to Windows 7 from XP. The problem still exist. Did a speed test and she's getting what she paid for. The problem only happens at night. So, I got the feeling someone is leeching off of her Internet. Almost every month she has nearly reached her data cap, which is very unusual. If someone did use Backtrack to access her Internet, can it be traced at home? I was looking at Wireshark.