I just can't help myself but laugh at the stupidity of some people. Surely you would say that after leaving the keys to your door in the lock from the outside only to find your house empty that your door has been "hacked".
Use a better password next time and keep it somewhere safe, preferably in your head only. Chances are somebody has guessed the password to your hotmail account or to your secondary email account. It's not bad luck...you know what it's called.
Also, having keyloggers, trojans and other similar shit in the computer is only the user's fault. Some people need to learn the ways of the internet.
You have just been taught a hard lesson, but at least you'll be smarter next time.