Just a friendly reminder to make sure you have anti-virus protection that is ACTIVE and UPDATED on the computers that you use.
Did the trial subscription that came pre-loaded on your machine expire? Time to do something about it.
Here's an article with links to free programs that work well http://www.zdnet.com/pictures/free-antivirus-scanners-for-windows-pcs/
The stakes are too high (both to yourself and the other users that you might infect) to ignore this.
Added bonus: you'll be a good Internet citizen.