Paste, what have you been doing lately to get all these viruses? If you truly have been virus free for three years with no AV software and now you've had at least two major problems, you may want to change your browsing habits.
I got the FBI ransom virus from downloading an old game I used to play but apparently it was bought out by some sketchy people. I would say that's the users fault (me) for not checking if the game was still legit. This time I really have no idea where I got it from.