I'm having some trouble viewing certain videos, those that wont work doesnt work neither on Chrome, IE or firefox, Chrome has ADblock, the rest doesnt, I've also tried pausing adblock and play, did not work.

One of the video reviews I'm having trouble watching is this one:

http://www.gamespot.com/dungeon-siege/

Once I click the play button all I see is a black screen, I've had this problem since the new site went live (several months)