Please Help

Please help,
My network shield keeps scanning www.youtube.com ALL THE TIME even when i am not on youtube my network shield is never idle its as if youtube keeps accessing my pc, is this normal? can i stop it?
some times it say s2.youtube.com

http://i157.photobucket.com/albums/t41/add1571/help.jpg

http://i157.photobucket.com/albums/t41/add1571/help2.jpg

Do you have any youtube products on your system, ie toolbars or youtube downloader ? if so get rid of them.