I'm still favourably inclined toward Martinez, but not as much as I was and it's getting harder to defend him against friends who definitely aren't.
A loss tomorrow and the pressure really will start to be on and become more vocal on match days. But, I think our League Cup run is already going to be the making or breaking of him. A loss to Boro or then a loss to anyone but Man City in the semis and I think he loses the support of the likes of me too, and then the pressure really is on as only die hard loyalists will be supporting him. Conversely, win us our first trophy in 21 years and then he has a free pass (save an absolutely disastrous league finish) until next season and then maybe he changes the mentality back to one of a club that does truly compete for silverware (again) every season and we go through a period of regular European runs and Cups runs.
So for me, for now, someone who is naturally inclined to want to give a manager more time (I always think, shy of someone clearly out of their depth, e.g. a Steve Keane, a manager really does need 3 years minimum) there's still enough there I'm still behind him with hope (rather than expectation), but that's fading faster day by day.