This was happening before I upgraded. I assumed upgrading might fix the problem.
I did not, that I remember, change anything. Add plug-ins, or do much of anything except maybe add a few comments.
Otherwise, everything else in the admin area seemed to work fine.
Another blog of mine, on the same server, was attacked. Meaning,
someone seemed to gain access to the then editable Theme Editor and added links to .ru sites and google ads. I cleaned that blog up, locked all theme pages, and checked the one in question. I didn't see anything suspicious, but double checked that it too was locked down.
That's the only thing that comes to mind.
Thank you for your time!
Jon