I thought it curious that I was receiving many e-cards - from an old school friend, from a friend, from a partner etc.

It seems that this is a new virus that is being spread around the place, and because we all receive this message that purports to be from a trusted source, some of them have been opened.

I'm not sure exactly what it does, but (a) don't open an e-card except if you recognise that is from a trusted source and beware and (b) do a virus update too, especially if your computer is slow, or playing up.