So this time I was waiting for the bubbles to appear. And waiting. And making sure the burner was on. And waiting some more. No bubbles. Finally I decided it had been long enough and started to put the flour in. It stank like burnt food, and the flour even looked burnt. So I threw it out and started again. It turns out that the little bubbles only appear when there is an "imperfection" in the oil...like a little piece of meat from the main dish. But when your pan is perfectly clean, the oil just starts to heat without the bubbles.
And the quilt progress - I've quilted about 1/4 of it.