Since Update from 0.6.2 to 0.6.4 i notice that "center" is now positioning on the left side of the main-content. before it was above the main-content. So my shoutbox now is "center" and the main-content seems to be "right" (i have no right content at all).
Edit: I'm not able to position the shoutbox above the main-content. I now use TOP as workaround, but then the left content is UNDER the shoutbox.