> it then produces a delay if the ad can't be downloaded I work for video site and wrote the player we use, and this is exactly that I think would be happening

> it then produces a delay if the ad can't be downloaded I work for video site and wrote the player we use, and this is exactly that I think would be happening. Our player has a similar issue, and it even sometimes occurs with no ad blocker. The player I wrote loads ads via the VAST specification, which is pretty much what the entire web uses for ads. This means we have to make a client side request for an xml document, parse it, then see if it has an ad unit we can show. Even if we don't get an ad there can end up being multiple round trips due to the way VAST and the ad networks work, thus delay.