AntiVir Personal Edition Classic with incremental updates
A new beta version of AntiVir Personal Edition Classic (AVPE), one of the best free AntiVirus you can get, has been released which supports incremental updates. Advantages of incremental updates are faster, smaller and easier updates!
Previously, while updating AVPE, whole virus database was replaced by an updated database. Because of this, update file size was in the order of 2 to 3 megabytes. But, with incremental updates, only lastest virus definitions are downloaded and "added" to the present virus database of AVPE. This greatly reduces the update file size to about some kilobytes.
Try out the beta version here.