I opened a complex dxf-drawing (saved as pdf from SolidWorks).
File A) combined 1700 objects with "Ctrl + K": Inkscpae 0.46-->1sec; Inkcape 0.47-->80sec
File B) combined 3000 objects with "Ctrl + K": Inkscpae 0.46-->2sec; Inkcape 0.47-->freezes
This really looks like a major bug.
I am afraid with these kinds of complex drawings I´ll have to stick to 0.46 until it is fixed.
Can anyone confirm this kind of behaviour?