I just set up a new blog and named one of my Link Categories "Original", then I added a tag called "original" not realizing that would cause a problem. Which it has although all most posts are drafts at the moment, I haven't published anything.
I tried to edit the Link Category to "Source", but that changed the tag to "Source" too.
Any suggestions on how to straighten this out in the db would be most welcome. In the meantime, I'm going to go snoop around my cPanel to see what I can figure out on my own.