Letters

I read your test on headlight cleaners in the March 2012 issue. I used to shine my motorcycle headlights with toothpaste, a mild abrasive that's inexpensive and worked just fine.

Michael Kaloyanides

Bethany, CT

In "No, Your Computer Isn't Infected" (Up Front, February 2012), you reported on free virus-scan software, AVG Anti-Virus 2012. I did the recommended scan. But to delete errors it found, it required me to buy the software. Is this another scam?

Leonard Chabot

Myrtle Beach, SC

Editor's note: Make sure you click the link that says "Download Now," not "Start Download" and not an ad or a "sponsored" link.

"Dental Do's and Don'ts" (February 2012) was interesting, but you didn't discuss how often to get full-mouth X-rays. My new dentist insisted I get them, even though I'd had them a couple of years ago.

Sharon Alwart

Brighton, IL

Editor's note: Adults shouldn't get full-mouth X-rays more than once every five years, and then only if there's a reason. Many adults need only bitewing X-rays taken every 18 months or so to screen for cavities. If you're told to have X-rays more often, ask why.

To correct a printing error in a valid U.S. passport, Form DS-5504 is all you need. We said another form might be required, too, in an Ask Our Experts answer in January 2012.

In a February 2012 report on chocolate, we said Leonidas has one physical store. It has 15 stores in seven states and the District of Columbia.

A March 2012 article on America's top stores stated that Sam's Club offers express shipping to Plus Membership holders. Express shipping is offered for some online items, but it isn't a perk at any membership level.