NPR Bias? Or is it all in our heads?

http://www.npr.org/blogs/ombudsman/2011/10/17/141415623/on-murdoch-and-liberal-bias-at-npr?sc=fb&cc=fp

NPR- constantly bombasted for their "liberal bias". It's a fairly well know criticism now with Juan Williams and all that. But how much of it is trumped up? I don't know if I can say. But sometimes I feel like they get blasted for the smallest things. Should they be under a microscope, so to speak, since they get public funds? Probably, to some extent. But when is it too far? I really don't think they went overboard with their coverage of the hacking scandal this past summer- frankly, I got most of my news from the NY Times (surprised?) because they were breaking news faster than NPR. And it was facts, not opinion. People were hacked by employees of NewsCorp. It hasn't been proved yet how much Murdoch and his son knew. I personally think the son knew a lot more than he's letting on- and I think Murdoch knew as well. But those aren't facts, just my opinion.
I liked that this article broke down their stories that were ran compared to other news outlets- when you look at it that way, it doesn't seem any more than, say, The Wall Street Journal. So what's the good word? NPR bias? Let's hear it!