9 times out of 10 when I try to use the wifi at my school I get this error. I have no problem accessing their login system that shows up when I open a browser, but if I try to visit a site after I do that, this is what I get.

http://img682.imageshack.us/img682/3439/wutqf.jpg

Tried Chrome and IE, same thing. Problem on my end? Theirs? Wtf.

Every now and then it will randomly NOT give me this error and work fine for a little while, then give me the error, then it will go away again. But it usually gives me the error.

Were you using privoxy as an ad-blocker? If so, turn it off.

I'm not using Privoxy anything afaik, I've never even heard of it.

BTW its an asus netbook running XP.

Try updating your wifi drivers. The ones that come with the factory are ****.

Looks like you're running ToR or something.

Your school's sysadmin sucks.

Well it says right there it's running on your computer.

It comes with Tor if you installed it.

Agreed. Localhost (127.0.0.1) is you. This appears to possibly be a firewall issue on your computer relating to this Privoxy program. To quickly test, try temporarily disabling your firewall and try again.

Privoxy would be running in your tray. I think it's a blue circle with a white P in the middle.