Hi lopesmaio,
If you know how that a-squared free ticks and you are a bit of an experienced users it will provide you with a very detailed scan. Yes you have to sift out some of the false positives, but as you know what you download that is not so much of a problem, just don't tag for what you are sure is a false find. Then it finds a lot of what it considers risktools, where you know why you have installed it and because it is flagged because of a bug inside the software, just leave that also. It is and was for me always very accurate on finding privacy related cookies (only a minor threat as such). Well because I have grown used to it, it is still on my computer, but I would not advise it to some-one that cannot establish between suspicious and false positives, not for newbies I think. I am very positive on the working of my in the cloud av solution ImmunetProtect, it scans all that comes onto my computer (all downloaded files and temporal files) and it flags what it has to flag (one suspicious file got a red) and the rest was all green. It works great next to the resident av-solution and recognizes and works alongside Threatfire. Does not use much cycles, does a full system scan and of running processes. I have to give this tool a big thumbs up, guys,
polonus (malware fighter)