How you block Flash Ads?

I just can't get rid off this one!

[explorador]

Hi Webmasters, there's this ad from an international telecommunication company that keeps appearing on some of my websites.

• First, my websites are about natural widgets, this ad is about artificial-out-of-this-planet widgets... the ad has nothing to do with the content.
  
• Interest based ads are turned off, so I can't figure out why is this ad appearing
  
• I can't find out the url of the advertiser without clicking on the ad, the Firefox trick is not working.
  
• The Adsense Preview tool is not showing this ad or any info about it, so I can't block this ad
  
• I already blocked all the certified ad networks and the ad is still showing
  
• Being a very known international company I guessed the main URL and blocked it a week ago, it worked but the ad returned two days ago
  
• I changed the main preferences on my Adsense account to show only text ads, but this flash ad is still showing!
  
• I checked my code and is all ok, no hacking on my pages
  
• Is not a cache problem
  
• Is kinda hard to check it because I can confirm my sites show diff ads depending on the browser and computer [same page], but this time the ad is appearing on the same spot everytime

Any help would be appreciated

[ken_b]

Being a very known international company I guessed the main URL and blocked it a week ago, it worked but the ad returned two days ago

You listed the domain like

example.com

and not like

www.example.com

right?

[koan]

I use the Firefox add-on Firebug for such things. You just inspect an element on the page by clicking on it (it doesn't activate the link) and it provides the html behind it, even if it's external like flash in an iframe. Great tool for any webmasters.

[explorador]

You listed the domain like

example.com

and not like

www.example.com

right?

Yes, still it appeared. I changed my prefs on my account to show only text ads and still showed.

Finally I changed the options of the ad spots specifically to show only text. The flash ad now is gone but is not the answer to my issue. I only want to block that ad, not all the flash ads. Obviously the general preference doesn't work as it should.

Any advice is welcome

[explorador]

Thanks koan, I will try with Firebug

[eeek]

You just inspect an element on the page by clicking on it

That's an absurd way we are being forced into to deal with this problem. If Google wasn't such a de facto monopoly, would anybody put up with their bad reporting, lack of transparency, and awful management tools?