I use the Windows Version of Adguard. I have deactivated it in Firefox, because I use another solution in this browser. Since the last update (version 7) every time I download something in Firefox Adguard service goes up in CPU Time. It somehow does intercept these downloads. The file itself are properly downloaded, but I don't want Adguard to mess around, if deactivated. This bevavior is abolutely new and not welcome, else I wouldn't have it deactivated for Firefox. I tried the latest nightly which does the same thing. Now I reinstalled the last version before the upgrade to 7 and it works fine, no interception in Firefox.