OK, tonight is some time for some humble pie. I changed empty_string_p, asked you folks if you thought it was a good idea, took a walk and read through some discussion forum stuff here, and then changed the virtual host. I forgot what I had done to empty_string_p, and that was the culprit. So, I put empty_string_p back, and now I'm up again. Sorry for the false alarm. I did spend about an hour trying to trace the problem before I asked for help, however.
