b1257+12 was a sample mangling patch.  I don't recall how many samples it loaded (2?) but it really did not do that much out of the ordinary.  It may have had some random walk type of parameter changes and in true NN style the interface was inscrutable. 

Plus you had to deal with them to get the thing in the first place.  Not a stable or rational group to try and do a transaction with.  For example, I am one of two non-c74 employees banned from using Nato for life (the other is Sean Booth of Autechre).  NN was amusing then annoying then pathetic in a space of maybe 18 months.