Review by Mark B

Installed this on our 2009 iMac running 10.7, and it slowed it to a crawl. I tried to adjust the setting to make the protection less resource-intensive, but it was just too slow. Perhaps if you have a very new Mac with more memory, the sluggishness would not be as noticeable; but for an older Mac, I cannot recommend this product. We ended up having to uninstall it, which is too bad, since the features look great.