Wow... Miller columns is one of the first things that annoys me about OS X (technically) and I turn them off. I am not sure why, but they bother me like the OS X default of opening a new window each time I double click a folder.
The CNTL+2 does not result in 'miller columns'; just information columns.
I do not see any option to add that in Nautilus... but have read that Nautilus 3.0 will have them.
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