Just checked Minerpools again and after eight hours it finally found a block! My experience is that's entirely out of character for this pool (usually ten minutes to maybe ninety, but multiple hours?). If I'm just over-reacting let me know and I'll try to temper my expectations!
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Strange! The pool appeared stalled for some eight hours, but now seems to be running normally again! Some glitch? In any case, glad it's running again!