I didn’t try other options i was using only captcha, and i am using ajax, my short code looks like this:
content_protector password=”CAPTCHA” cookie_expires=”0″ identifier=”1″ ajax=”true”
I have now installed quick cache and i have no issues now with cached pages.
I think issue with super cache is with ”preload mode” option, i think that only preloaded pages were having -1 issue, other cached pages were fine. Maybe im wrong, when i have time i will test this.