RICK KARR: And now for a few of your letters. And I guess I should be glad that I'm not usually here because it seems like last week you really messed up.

BROOKE GLADSTONE: Yep.

RICK KARR: First a couple of flubs by Margo Jefferson in her discussion of movies in which the plot turns on racial "passing." Andy Seiler of Washington, D.C. noted that, quote, "Your guest erroneously stated that a White actress always played the Black character who was passing for White in that movie genre. Not true. In the original 1934 version of 'Imitation of Life' – not the remake, which you dwelt on – Black actress Freddie Washington played the part." And we got this from Patsy Moore of Clifton, Ohio. Quote, "I'm afraid the segment last week about films dealing with racial identity and the historical realities of the '70s was a little too off-the-cuff; i.e., most states did not have laws against interracial marriage in the '60s – basically, less than half – and most of those fell during the '70s. Don't you guys do a fact check?"

BROOKE GLADSTONE: Michael Eisen of Northern California was one of several listeners who found fault with my interview with Jonathan Zittrain about how the architecture of the Internet leaves it vulnerable to a devastating virus. Eisen writes, "As a computer professional, I find Internet maven Jonathan Zittrain's rant severely lacking in technical expertise. First of all, the mechanics of viral contamination remain confined to e-mail attachments and bugs residing in Web pages. Secondly, effective firewall and anti-viral protection are available for free, or less than an annual subscription to one's local public radio station. Zittrain merely echoes the often-discredited attempt to subject the Internet and e-mail transactions to government regulation, an effort that makes no more sense than regulating people's postal activity because there are such things as letter bombs."

RICK KARR: Keep those corrections and comments coming to onthemedia.wnyc.org, and don't forget to tell us where you live and how to pronounce your name. [MUSIC UP AND UNDER]