I looked at my HOSTS file and there is A LOT of 127.0.0.1 with a website url after that..
example :

127.0.0.1 desktop.kazaa.com
127.0.0.1 www.altnetp2p.com
127.0.0.1 alpha.kazaa.com
127.0.0.1 shop.kazaa.com
127.0.0.1 www.bonzi.com
127.0.0.1 www.brilliantdigital.com
127.0.0.1 www.b3d.com
127.0.0.1 media.altnet.com
127.0.0.1 www.altnet.com
... etc

there is like 200-300 lines there..
Is that normal? Is this some kind of cache? I don't even remember going to these adresses, so if it's a cache, when does it get deleted?