For a limited time you can download and use AVG 7.5 Professional Antivirus (RapidShare & MegaUpload mirrors) for free. For those of you running the always-free version of AVG there are some advantages to making the upgrade, such as advanced scanning and scheduling options.
I haven’t installed this myself because I’ve already bought a subscription to the ESET Smart Security suite, but from what I’ve read the file that you download will automatically enter in a valid serial number during the installation process. There is no word as to how long the subscription is good for, but I’m guessing one year.
AVG 7.5 Professional retails for $29.95, and this offer is good until January 17, 2008. It can only be used for personal use.