I have been working on our stores today, no problems until five minutes ago when the problem started again at a bit after 3:00 pm PDT. I can do everything except upload photos.
That's 11:00 pm in the UK. My best guess is that eBid is running maintenance programs that somehow lock the gallery, scheduling them for overnight in Europe when sellers there won't care. Of course, this disables U.S. sellers who want to add pictures in the afternoon and evening. This is the third afternoon in a row, too consistent to be a coincidence.