yeah i think some people are just basing stuff off what the DSTWO does i.e drains batteries and can get hot, i havent noticed any difference in battery between retil and gateway card....well maybe ever so slight, but even then i couldn't say for sure......probably just about the same with variations of not having wifi on etc
and i have never felt the gateway get hot at all
either that, or someone got a faulty card thats shorting out, getting hot and draining the battery....but i would imagine if that was to happen the card wouldn't work anyway