nate45, I had to get background checks when I:
took the bar;
got sworn in as a prosecutor;
got my ccw.
I have this feeling that I've had other background checks, but I can't recall when they were. I'm not afraid of the background check. I don't think it's the government's business to run my background every time I buy a firearm, though. I think it's a hurdle that some folks (not necessarily folks on this board) want to put up for the sole purpose of deterring gun ownership. I think universal background checks will be ineffective at deterring crime without full registration.
I'm a lawyer, but I'm not your lawyer. If you need some honest-to-goodness legal advice, go buy some.