A side thought about the sample loading window... who on earth decided black on black was a good thing?! It's totally unseeable now in 5.6. Even their emails are black on black and totally unreadable without highlighting the text making it white on blue. Either NI has no clue, doesn't use their own stuff, or they operate under infrared lighting.

Ha ! . . . another reminder to not upgrade to v5.6 too quickly (still on 5.5) . . . though, upgrades are usually inevitable, even if they have gone to the dark side.

Just a warning, if you do upgrade Kontakt to 5.6 (I was forced to, since things I bought wouldn't work without it) and do a batch re-save with it, you won't be able to open that re-saved library in an older version of Kontakt.  It is a one way street after doing the batch re-save.  While I dislike the changes to Kontakt's keyboard coloring (which they seem determined not to fix/change) the rest of Kontakt 5.6.5 has been OK for me.
 

Great thread, very helpful.  
 
For grins I just did a batch re-save on the Peter Siedlaczek Complete Orchestral Collection. Oh My...  That was similar to watching water boil but it sure loads quick now!