This morning I woke up to an email from a customer who had sent me an email selling various pharma-type drugs (you know, viagra etc!).
It transpired that her laptop had been nobbled by malware that was then part of a larger spamming botnet and was the cause of many humourous replies to her 'caring' email.
Combofix and Hitman Pro were run through her (Microsoft Windows) laptop which found a few items of malware which will now stop the fake spam. Read more about Spamming botnets.