You've got a major bug in there somehow with cookies. I installed this and was very pleased. But it's effectively killing my vbcart cookie based shopping cart. When you add an item in the cart, it will not take a second one. Man... I went weeks into testing this modification, beat it up all the way and all works just fine until I put that htaccess. For 2 hours I was lost, could not figure out why this was happening, until I disabled the htaccess.

I think that this also hurt anyone who is using IPN to post back to the site

Uninstalling ...

If your boards are that busy then you should be on a decicated server and that should be fast enough to cope without installing anything :D

you show try adding
RewriteCond %{HTTP_COOKIE} !^.*cookies=true.*$
under RewriteCond %{HTTP_REFERER} !^$

or
RewriteCond %{HTTP_COOKIE} !(^|(.+;)*)Usercheck=validated(;.*|$)

That does not work. It won't even let me clear cart ...

I think it has an effect on $_POST

do you have cookies enabled or disabled ?

I'm testin this :)
Thanks!

Of course they are enabled. Everytime that I try this mod, I must clear all cookies in order to surf normally

it says internal server error after i upload

i just updated it download new version