So my benevolent web host updated the version of WordPress they use a while back. What changes I noticed were generally for the better, except for one thing: all the links on the blogroll were now doubled. I tried everything I could, including deleting and re-adding the links, to no avail. It didn’t hurt anything, it just looked stupid and annoyed me. I can build an entire website by hand, but I can’t fix duplicate links in WordPress!
Today I tried again and was able to straighten things out. What I did was switch the category on each link, save, then switch back. It killed all the duplicates. I’m not sure if this is a problem with updgrading to this version of WordPress or if something went wrong at my host, but it’s nice to have this little bug fixed.