I can add some data to this: it happens if you run the updater more than once per boot session on the computer. My first session of the day, I have no problems, but after that I usually get 2-3 locked files. Apparently, the files are not getting unlocked by the updater when it closes. For me, it's always the Kunzar zones. I just don't run it more than once a day anymore.
__________________
|