SOCKS proxy doesn't work

I've got a problem today with my basic Internet setting, the SOCKS proxy, it was working till today bud in a few hours it starts with some problem such as cant load some picture and it goes on and all of my browsers just cant open some website such as and cant open most of my Internet surfing.
The SOCK proxy works well in other computers and my virtual OS in my PC.
I'm an Iranian Internet user and I have to a connection for visit some website like or most of the websites are proxied in Iran :eek:
sorry for my worst English

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