Before I say anything, I am a malware nerd, I make my money and pay my taxes by removing malware off of peoples computers. Its not called virus, virus is a type of malware. About avast, it's a decent but falls extremely short compared to products like Comodo Internet Security (Cis for short), Bitdefender, and F-sercure, AVG, ect. (In the order of best to good.) Just like General Black Dragon said, "Avast is retardent, Delete it." If you agree with him, for the love of god don't replace it with McAfee,Iobit malware fighter, or forticlient. Replace it with Comodo Internet Security Free, If you don't like it then go with avg. Bitdefender is really good, but the free version doesnt have a user interface, just an annoying widget in the bottom right with the other programs. It is highly glitchy and annoying. F-Secure is great, but i dont know if it has a free version. And Avg Free Doesnt have a firewall.
The only problem I have with cis free is that it tryes to install a plugin called privdog, if it gives you the choice the to install it say no.
The only other problem you might have is that when ever you turn your computer on when its completley off is that it gives you a little advertisement. Its small and it can be easily x'ed out of. It doesnt give you crap before you can x out.
Here is the link for CIS Free if you decide to get it.
https://www.comodo.com/home/internet-se ... curity.php
What comodo means by upgrading means is buy the full version. As great as comodo is, it doesn't like battlezone using the internet, so i recommend using AVG. Comodo>Avg. Avg is just so you have no problems with battlezone 2. Yes this is my hobby. Deal with it.
Avg Link:
http://www.avg.com/us-en/download
The version of AVG you will get is "AVG Protection" And make sure you get the free version.