I have used Avast for years, and recommended it to lots of people.I just replaced a hard drive and and installed Avast. Its light on resources, free, pretty accurate and has, for example, coped with every USB malware my students could throw at me (not that they do it on purpose, just every 80 of the machines in this country are infested including the park in the computer study hall).The add-ons have multiplied like wildfire as well, and no, I don't need a browser, or a firewall, just a file based protection. But my students need more, so even the extras don't bother me. for years I used to recommend it when asked without hesitation but recent developments are getting me to consider alternatives.To stop this from happening to anyone else I would highly suggest when installing this version of avast to make sure to do a custom install not the standard install.When you get to the screen that shows the items to be installed uncheck the option to install "Browser Protection".If configured correctly you'd be hard pressed to find a better anti-virus program.
If you are ok with that, then the product is effective.
Occasionally I also run Spy Bot but it never finds anything that has got through. I have installed this program on over 50 computers.
These are the ones that get brought to me because their commercial product, or their other free antivirus couldn't keep out the virus'.
Over the last several days, I noticed that when I click on a web site, it is taking painfully long to load. I do not recall this problem in earlier versions, but it has me considering another program.
After some searching, the Avast web shield came up as a problem for many folks. I can't recommend, without a warning about this issue.