Thanks, I found my bags - didn't think I had to activate them first.
I have another problem though, but only with my warrior (tried it with hunters also, there is works). Only there the bar 7 is always linked with bar 1. So if I put an icon/spell in bar 1, it appears in bar 7 also and vice versa. Now I can't even deactivate bar 7 any more, just make it invisible. I read all the instruction up and down, to not miss something like the bag button, but can't find anything. I can live wiht that bug, but somehow I feel unwell nevertheless.