Can't access certain sites for some reason.

mostly all the search engines are "gone" as well as hotmail and a few others.

now i'm pretty sure it's not my net because i can access onrpg, romhacking.net and a few LPer's homepages.

now another interesting thing is i can watch youtube vidoes that are embedded but cannot access the site itself. i fear it may be a Trojan, but i was wondering if anyone else had this problem and if they can confirm.

Edit: turns out it was my net acting up.
or it could have been the Trojan i killed.