"The scam always starts the same way: the phone rings at someone's home, and the caller – usually with an Indian accent – asks for the householder, quoting their name and address before saying "I'm calling from Microsoft. We've had a report from your internet service provider of serious virus problems from your computer."

They go on to warn that the computer will become unusable if the matter is not resolved. The puzzled householder is then directed to their computer, and asked to open a program called "Windows Event Viewer". Its contents are, to the average user, worrying as they look like a long list of errors, some labelled "critical". "Yes, that's it," says the caller. "Now let me guide you through the steps to fixing it."

The computer owner is directed to a website and told to download a program that hands over remote control of the computer, and the caller "installs" various "fixes" for the problem. And then it's time to pay a fee: as much as £185 for a "subscription" to the "preventative service"."

http://www.guardian.co.uk/money/2012/mar/23/hoax-microsoft-windows-security-calls

that there are no viruses on any of your computers. See what his response is before hanging up.

Tell him you have a Mac, and it has no problems.

"Click"

Now another computer related problem.
All of a sudden my printer, HP Photosmart Premium is stalling. Prints 3/4 of page stops for about a minute and then prints the rest.
WTF?