Here is a temp fix for the issue when you are watching a youtube video in Chrome and then you try to fix it, Chrome crashes. Unfortunately the fix is to disable the two Flash dll's. Chrome is working on a fix. These two dll's can easily be re-enabled as needed.
* In the chrome URL window type about:plugins
* Click show details
* do a find on gcswf32.dll and NPSWF32.dll, disable them both.
For reference-
http://www.google.com/support/forum/p/Chrome/thread?hl=en&tid=1fe8d66c8677d694
