Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.7.0
Recently, my newsfeed was taken over by a bigger operation. They did a
grand renumbering and ever since, Pan has marked everything in each
group as being read as soon as I entered it. I remember this happening
once before, and that it was fixed by editing my newsrc file. Alas, I
don't remember what was needed. Any suggestions will be welcome.