Too Correct the Problem of YouTube not playing videos with Chrome Browser.

Follow the Steps 1-4 only, that Toni -(Googler) gave on 2/10/10.
Then Open your Chrome Browser and go to Tools (wrench) and select Options.
Then Select Clear Browsing Data.
Then check---Empty Cache, and Clear Cookies.
Select Change data for this period to : Everything
Then press the Clear Browsing Data Button, then Close the Large Option Box.
Close Chrome and then Re-Open....IT Should work for YOU.....It Did For Me......!