[danskmacabre]

I would add that when powering on my KT it takes longer to read the book list from the external card as well. Probably about 3 times as long, which isn't that long, just maybe 20 seconds more now.
Also I notice when reading the external card, the text of the % of reading jumps up a few lines and then down again, which looks odd. It never used to do that.

I also noted when adding books to shelves, if you do a search (like a wildcard search)when adding books (instead of just paging through the complete list) sometimes the process just cancels out and goes back to the home screen.
This doesn't happen when just paging through all the books though.

As already stated in many places, paging is a bit slower now when reading books from the external card.