hmmm, yes they do get v warm when running at correct speed.

Does the Antminer run ok on say a normal windows pc? Or do you have a 2nd unit to test to see if its duff or not?

Other than that i would unplug all devices, completely turn off, then back on insert only the antminer and try.

if not go back though and perhaps re-do all steps. (Should be fairly quick at doing these by now! i know i am..lol)

just one more thing to check, there may be somthing wrong in your start line! somthing as simple as a space in the wrong place, or only 1 - instead of 2 --. if the freq and bauds are not sent correctly then i think it goes to a low default setting.

sudo ./cgminer.exe --bmsc-options 115200:20 -o stratum.bitcoin.cz:3333 -u oldiesel.worker1 -p x --bmsc-freq 0981

drop the .exe! (this is only for windows)