Video Advertising Causing Crash!

I think I posted this in the wrong spot before (sorry new to forums) - Anyway, as the title suggests, the video advertising, is causing several people to crash on a regular basis.. not just crash out of the server.. but crash the entire game. I know personally, I have had to re-start my L4D2 dozens of times.. sometimes several times in a row, just to be able to click that OK button before the video loads.. or it's "Freeze up and crash"

Please.. look into this?

Thank you!