Same Content / different URL's

Hello Stackideas! You gave me already early helped a lot. Everything is great, except one new problem.

My Website is now about 1 month online and just now i looking in to the Google Webmaster Tools.
And i found an information that's a kind of duplicate Content.

Because the blogarea from my site is reachable under: http://www.xxxxxxxx.de/geldblog

and every article, tags etc. are also reachable under
".de/geldblog/tags"
".de/geldblog/article1"

but there are also reachable under
http://www.xxxxxxxx.de/easyblog
".de/easyblog/tags"
".de/easyblog/article1"

I use SH404sef, is it possible to change this? That there is not more reachable under "easyblog"?