felix001 13 Junior Poster in Training

On random pages of my site im getting the following error:

Permission denied for <http://googleads.g.doubleclick.net> to call method Location.toString on <http://fir3net.com>.

I have no clue on how to debug this or what could be causing this. I have searched the web but no one seems to know what this is caused by, my concern is that it could be affecting my revenue....

Any help would be great... Thanks,