[tobyhill]

It's my understanding, could be wrong though, that there are system cookies that don't attach to the files on the hard drive but are actually on the BIOS and that no matter where they go or IP addresses used (changed) the specific computer can be located within a minute by pinging it. Kind of like the little I-Net phone adapters that no matter the number the companies still can find out where it's located.

[piasa]

I'm no expert either but I think in these cases the "specific computer" is often just the server of a legitimate company that is unwittingly hosting that web site amid thousands of other legit sites. The terrorist web sites are uploaded onto the servers from the terrorist's computer- or more likely some public library or coffeeshop computer overseas and after that the original computer is no longer involved. Any tracing goes only to the legit server whose owner can then be notified to shut it down.

[Rennes Templar]

On another but related matter,I've got a stuboorn pop-up in registry files. Do you the Freeper site that addresses such issues?