LED glowing a bit even when Transistor is in off condition
Since the base voltage is only 80mV, it pretty much has to be the transistor. If..if..if the base voltage is steady and not spiking up to a few hundred mV or more every once in a while. If that is happening, an oscilloscope should be able to catch it. 

The specification at room temperature is for 15nA leakage maximum, and no more than 10uA at 150°C. I presume you would have mentioned if the transistor was that hot. 15nA is not enough to light an LED visibly. 15uA might be (a very efficient LED in a dimly lit room). 



To be absolutely sure, remove R23. If the LED remains on then transistor leakage (or severe PCB leakage) is your problem.