0.0.0.0 ad.doubleclick.net
What's the point of that ? Surely 127.0.0.1 would be the correct IP !
On windows from memory..... C:\Windows\System32\drivers\etc
It's an ad site which infests the Internet
Come on, be fair and at least describe it correctly.
It's a pay per click banner advertising company which many websites use in an attempt to supplement their revenues.
So it's NOT an "infestation" .... it's not a virus, its the explicit choice of the webmaster to put it on their site.