Regarding the last entry, got an answer. A nice polite one, which given it was rahaeli
, doesn't surprise me. (She's a friend of a friend, in LJ terms, though I doubt she has clue one who I am.) The answer is still pretty much, 'Nothing can be done about it, happens on purpose to protect the servers, suck it up and deal.' But at least it makes a modicum of sense, and I managed to post a support request without pissing anybody off. Woo-hoo, go me.
The explanation is here.