How do I permanantly prevent a site from storing data offline

Hello
I noticed that I have never visited a Web site (until I noticed today) is ranked in my preferences 'Advanced', 'network' and even if I can temporarily remove it via the 'Clear now' button, he later returned.

I google the issue and read astounding lines of code, but I'm not so wise to know where to make these types of changes could lead!

I've got 33.1 Firefox on Mac 10.6.8 and hope that someone in the community of Mozilla may have a fix.

Thank you

Hello

If you enter Subject: authorizations into your address bar and press ENTER, it should show you a list of sites. You can select the site that you want to store information and then set 'Maintain offline storage' on 'block '.

In your advanced options, you can also have "tell me when a website asks to store data for offline use" selected, so you ask all the sites, and you can block them.

Tags: Firefox

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