135mA through the 7805 will roughly give 1W (7V*.135A), so it should not really get that hot...
I just measured my Sanguinololu with the stepsticks installed, but with nothing connected: Powered via USB I measure 31mA and via 13.9V on the 12V input it takes 50mA.
Might it be that one of the digital outputs of the AtMega chip is shorted? If you take out the stepsticks, do you still get the 135mA? Do the 135mA change wenn you plug in/out USB?
I just measured my Sanguinololu with the stepsticks installed, but with nothing connected: Powered via USB I measure 31mA and via 13.9V on the 12V input it takes 50mA.
Might it be that one of the digital outputs of the AtMega chip is shorted? If you take out the stepsticks, do you still get the 135mA? Do the 135mA change wenn you plug in/out USB?