Can't connect to the internet due to a 503 error in the proxy, hel

[Breener]

Hey, I can't connect to the internet on Steam, Chrome and I even tried Internet Explorer in case and can't connect with that either. When I clicked on the "More information" button on Chrome, it said:

"Error 102 (net::ERR_CONNECTION_REFUSED): Unknown error."

Then, when I go to Steam, it says that it's a 503 Proxy Error. The strangest thing? It's only on 1 profile on my laptop (mine, not my brother's) and nothing else is affected.

Any help is appreciated, thanks!

[-pops-]

102 is normally an information code: 102 Processing (WebDAV) (RFC 2518)

As a WebDAV request may contain many sub-requests involving file operations, it may take a long time to complete the request. This code indicates that the server has received and is processing the request, but no response is available yet.[3] This prevents the client from timing out and assuming the request was lost.

From http://en.wikipedia.org/wiki/List_of_HTTP_status_codes

503 Error: The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. The implication is that this is a temporary condition which will be alleviated after some delay. If known, the length of the delay MAY be indicated in a Retry-After header. If no Retry-After is given, the client SHOULD handle the response as it would for a 500 response.

Note: The existence of the 503 status code does not imply that a

server must use it when becoming overloaded. Some servers may wish

to simply refuse the connection.

From http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html

[Breener]

102 is normally an information code: 102 Processing (WebDAV) (RFC 2518)

As a WebDAV request may contain many sub-requests involving file operations, it may take a long time to complete the request. This code indicates that the server has received and is processing the request, but no response is available yet.[3] This prevents the client from timing out and assuming the request was lost.

From http://en.wikipedia.org/wiki/List_of_HTTP_status_codes

503 Error: The server is currently unable to handle the request due to a temporary overloading or maintenance of the server. The implication is that this is a temporary condition which will be alleviated after some delay. If known, the length of the delay MAY be indicated in a Retry-After header. If no Retry-After is given, the client SHOULD handle the response as it would for a 500 response.

Note: The existence of the 503 status code does not imply that a

server must use it when becoming overloaded. Some servers may wish

to simply refuse the connection.

From http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html

I'm sorry, but that didn't really help my problem :/ I'd just like to know why this happened and if I can fix it.

Thanks.