pkg checksum mismatch for a variety of ports

[tech-lists]

Hello ports@,

What's the significance of this and what can I do about it? Deinstalling
and reinstalling doesn't help. These were installed with ports r436245
on 11.0-stable r314138:

# pkg check -s

Checking all packages:   3%
bluefish-2.2.10: checksum mismatch for
/usr/local/share/applications/mimeinfo.cache
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/XMLnamespaces
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/aliases
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/generic-icons
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/globs
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/globs2
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/icons
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/magic
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/mime.cache
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/subclasses
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/treemagic
bluefish-2.2.10: checksum mismatch for /usr/local/share/mime/types
Checking all packages:   4%
calibre-2.81.0: checksum mismatch for
/usr/local/share/mime/application/epub+zip.xml
calibre-2.81.0: checksum mismatch for
/usr/local/share/mime/application/x-mobipocket-ebook.xml

thanks
-- 
J.