When I tried posting to a shared journal my user pic came up as a "broken" image. Further inspection yeilded the link was missing /'picid' part of the code. I notice it does this here too for my pictures on posting to communities.
Being as I am a newbie to livejournal itself, I looked through the settings and did not see anywhere about hiding your picture from others.
As for here, I can see my picture at http://userpic.livejournal.com/17501829/3672999 but it only shows up in my post as http://userpic.livejournal.com/17501829/ . Is this a bug in cvs? Or is just only me for some reason?