Thanks, I know mc (even not so familiar by its components...).
I've rechecked my received system-infos again - one update from the jan-14th just downloaded the data in "download only" mode (see scrnshot) and another one, from jan-15th actually stated the update process itself (scrnshot).
In my opinion, thats little bit strange, I expected the system to do nothing with the first downloaded data (from the 14th) since it said "in download only" mode . But - even without my interaction - on the 15th those update data were really processed. Didn't expect this to be done automatically !
So, may be everathing is updated and system is in good state. (?)