While "from http://talk.maemo.org" wouldn't normally fulfill the CC requirements, it may in this case. This is because there's no real policy for users of this site -- meaning nothing states whether content that is added belongs to the originator or maemo.org. The best case would be a clear cut policy where use of Talk content was outlined with a step-by-step usage methodology.

Because of this, "from maemo.org," would actually be better (i.e., everything on maemo.org is under a CC license, not just what can be found here in the Talk section).

On a professional level, attributing the author would be better practice for the person who is reusing the content. But, I would say that the CC requirements are fulfilled so long as they mention maemo.org in some way.

Tim