Macbook getting sex ads with firefox

Recently, I have been getting sex pop-up ads when using my macbook. I exclusivity use firefox for surfing the web. It is not one particular type of sex ad, it is a bunch of different ones and they randomly pop-up along the left hand side of the screen and on the bottom of the screen in a tool bar. They all have x on them, so I can close them. But they just keep coming back. I am not sure if I have downloaded something. I have scanned my macbook with iAntivirus, and it never finds anything. What can I do to stop these ads?

Hi,

I only use Safari so do not know the FF security or privacy preferences, but try Adblock


http://adblockplus.org/en/firefox

I say this without judgment - you've likely gone to either a shady website or a pornographic one. It's possible that one of them has left a little treat for you. A simple way to start cleaning this up would be to clear out any saved data. To do this, go to History > Clear Recent History > Details > make sure everything is checked > set the time range to some point before this started happening > Clear Now.

And, as we've pointed out repeatedly here, so-called "anti-virus" programs do absolutely nothing except tell you you haven't got one. This issue sounds like either a cookie problem, or ad tracking.

Check your add-ons. Make sure you haven't picked something up you don't want.
+1 for Adblock Plus
Might want to look into BetterPrivacy and Ghostery too.