If you think that your computer is haunted, there may be another explanation. Dave Thomas, an FBI agent, tells that illicit computer remote control is a lot more common that what we may think. Some times the one at the other end only want to have some fun, but some other times it’s more serious. If you are interested, you may read this:
Oh, and good news for me: it seems that a Mac is more secure than a Windows machine (but I already knew that). It’s somewhat funny too to learn that the FBI does not know enough about Macs and send them to our mounted police. :-)
Also see the French discussion about this entry.