I have had a problem in my last impressions.
I have Sanguinololu 1.3b with Marlin. I slice with Slic3r 0.9.9 and print with Pronterface. It was printing perfectly until yesterday.
It starts printing, after a couple of minutes or so it homes x and y axes and stops. After that I need to reset the board if I want to take control of the printer with Pronterface. The be temperature does not stop rising and in fact I get an error from Marlin saying that security temperature has been reached.
Any clue about what it might be happening?