I'm using a Macbook with all of the latest software (Mac OS X 10.6.7). Something seems to be sending out messages under my Yahoo email address to addresses on my Mail List with messages to click on various malware sites. I access Yahoo Mail directly over the Internet. I do not use Apple's Mail program. I have downloaded AV software and scanned my hard drive. (Nothing showed up.) I have changed my Yahoo Mail password and shut down Yahoo Mail when not in use. Over the past day or 2, and when logged out of Yahoo Mail, a Yahoo (??) pop-up box comes up occasionally asking for my Yahoo Mail password -- which I cancel, obviously. This seems to be since changing the password. Does anyone have any suggestions on what causes the bogus emails to be generated? Does anyone know what is causing the bogus (I presume) pop-ups?