As with any 'free' software, they also provide, and promote the "pro" version which gives added features, but if you care at all about your overall performance of your system, you might want to opt out of most of these things, as I make mention of in my OPTIMIZING TIPS , it is typically best to use this sort of program as a scanner/remover, but depending on your needs of protection I guess, that is why you have options and this is one place you should be visiting once you have installed it. And on that note, like with any software you install, you should always choose the 'advanced' option if available (even if it says it is for advanced users and you feel you do not qualify for that title), by using the advanced install option you are typically presented with options on where to install as well as WHAT to install and this is where you can de-select the automatic download and monitoring features. Of course if you purchase the pro versions, many of the annoying prompts disappear and this is no exception with Ad-Aware but that doesn't stop the program from being a very integral part in your routine computer maintenance, one of a number of tools, all of which I highly suggest getting if you haven't already done so, from the SOFTWARE/SUPPORT page .