I just posted a listing and I daresay it was the fastest posting ever! But before that I couldn't access Auctiva at all for about 1/2 hr. So it's very much hit-or-miss still.
When I get a runtime error, I have been trying out this method: hit the "back" button on the browser, and try the action again. It seems to be working, but I'm sure that's just as much of a fluke as anything else in runtime-error-world. Just thought I'd mention it as something to try.