The ARR is working great in all browsers except Internet Explorer 8,9,10.

When I paste Hebrew URL directly to the address bar it's working good, but when I surf (click on a simple href URL) from one Hebrew URL page to another Hebrew URL the ARR return me that error:

"502 - Web server received an invalid response while acting as a gateway or proxy server."
There is a problem with the page you are looking for, and it cannot be displayed. When the Web server (while acting as a gateway or proxy) contacted the upstream content server, it received an invalid response from the content server.

I checked it number of times including with HTTP analyzer and I saw that the "referer" is making all the problems and cause to that error.

For example when I enter to that page:
mydomain.com/somehebrewchars (mydomain.com/עמוד you will need Hebrew install)
And click in the page on a link to:
mydomain.com/somehebrewchars2 (mydomain.com/עמודנוסף you will need Hebrew install)

I will get the error above and when you look at the referrer you will see something like that:
mydomain.com/עמוד- חיתה

We use other proxies application to others projects and we don't have the same issue like that.
For this example we used WIN 2008 and 2012 with ARR 2.5 and also 3 beta.

Any help is welcome :-)