Well, I've identified (sort of) at least some of my problems. DNS IP propagation. Every now and then when I can't get to the site, I find I also can't ping jimbutcheronline.com, though I *can* ping the IP addy.
Except from my local Starbucks, where I can never get jimbutcheronline.com to resolve, though the IP address does. That was an amusing conversation with the barristas.
"You guys need to flush your DNS cache."
"Huh?"
"The server is hanging on to an old IP address, you need to repop it."
"Our what?"
"... Let me have an iced venti two Sweet-n-Low green tea."
"Coming right up."