My LO started responding to his name right around 8 months, maybe a week before he turned 8 months. He doesn't necessarily do what I say, like don't touch that or come here, but if I call his name, he'll turn and look at me.
My DS looks at us smiling if we say his name. He is almost 8 months but has been doing this since he first turned 7 months. I'm pretty sure this is him responding to his name.
Re: LO answering to his/her name