How to solve itunes error 3194?

I have problem restoring my ipad <<error 3194…>>
YES I did search it on google for the solution and follow the steps (such as changing host file) but still having same problem
anyone know other way to fix the problem ???
I thought it could be my laptop so tried it on my sister’s brand new laptop but no luck there either
please someone help me out!!!!

BTW I am currently running 4.3 and was thinking about upgrading it to newer version – I normally pay for my apps so jailbreak is not really a issue (but usually jailbreak to have more option :)