My proxyscript is never ending with searching

Hello,

I have a couple of proxy website, when i test my own proxy website to surf to like example paypal, then an error pops up in the display, that my server never stops searching and never ends.

it can be fixed by accepting cookies or remove them. I'm using firefox

My question is : does this problem only occours in firefox? or can it be fixed in my index.php

or is it maybe deeper problem and need i to take a look at my hosting.

I hope someone can explain, sorry for the bad english.

Thanks