I've enabled publicizing to facebook - even disabled it all and enabled it again, and whenever I post something, I see this on the right and it doesn't get posted to my wall:
To enable Publicize: Facebook, you will need to authorize your WordPress.com account on Xandor's space to connect with your Facebook account.
Click the link below to go to Facebook. You will need to log in and click allow. Facebook Page accounts must have a corresponding Profile at this time.
Authorize connection with Facebook
Blog url: http://duke2106.wordpress.com/