Our developers have tried all available channels to get support, of course. A ticket was created early this morning and escalated and marked urgent sometime later in the morning, but there has obviously still been no resolution. I appreciate that there are many available channels to report problems to you guys, but actually resolving the problems is a whole other deal.
As long as I’m here commenting, I should note that I misrepresented something in the original post, which I will correct above. This whole mess started not with us requesting an upgrade, but with a notification from Media Temple that our server was going to be upgraded. Not an elective surgery, in other words, but a routine procedure. According to the message (one of many that our developers have received over the last year, but the only one that has been followed by an actual “upgrade”), we needed to take no action.
Not exactly how it turned out.