Every time I try to watch a video which uses the new URL format (/watch#!v=id) the player stays black and shows "An error ocurred, try again later."
Changing the URL to the old format (/watch?v=id) solves the problem, but it's still annoying since most links inside YouTube use the new format.
I'm using Windows 7 x64, Chrome 6.0.408.1 (dev).