Q: I received nine emails with photos from a relative in Puerto Rico. When I opened the first one, it suddenly disappeared from view. I thought that I had inadvertently deleted it in some way and checked in the trash file, but it wasn't there. So I went back to the inbox to open the second email, and to my surprise, none of the eight remaining emails were there. But all other emails I had received were still there, and my computer is otherwise working perfectly. What happened?

A: I suspect that a computer glitch at your email provider caused your email to disappear.

While your email provider is Bellsouth.net, it is owned by AT&T, which in turn outsources its consumer email accounts to Yahoo. Yahoo's email software was upgraded in April, and following that there were scattered reports of people mysteriously losing email from their accounts.

You can take your particular problem directly to Yahoo by typing in "email is disappearing" at Yahoo's Answers site (tinyurl.com/bp2omd9). You'll be asked to sign in to your email, then allowed to describe your problem in more detail.

Yahoo also offers a help page for people who have lost emails, at tinyurl.com/d9p96u3, that suggests ways to search your other email folders for missing messages. It also tells you what to do if you believe your email account has been hacked.

Steve Alexander covers technology. Email your questions to steve.j.alexander @gmail.com. Please include a full name, city and phone number.