Turns out several of the PM notifications I got were actually comments to my Nexus profile.
Comments like this one:
"why are lying to your friends, theres noting to gain by that, You don't want help ok cool, No problem, drag your friends down with you, thats stupid Dude. "
This is no longer a case of possibly mistaken impressions. ccmechanic2, you have just pushed my asshole button. Enjoy the ride.