Best Free Anti Virus Software which keep my system speed unchange

avast free edition is the best i guess. from experiences using this antivirus since a couple years ago i have never found any suspects or viruses that can easily damage my pc, they are always blocked. the special thing is you can download the updated database through offline mode, it means you don't have to run avast software for updating, find that in the home site and updated daily. and the important thing is avast won't make your pc run slowly because of the light size. good luck and happy mylotting

i using mcafee. I think this antivirus is good because now my computer cleen of virus.

I am using avast antivirus and it working good on my computer. However we can use the new ones also as per its ability to tackle the virus.

My own experience says Avast or Norton. You can also try AVG. You can also 'buy' the anti-virus if you know what Iam saying

1. avg 2011 2. quick heal 2011 3. avast these all r best which i use try them

avast is my recomended antivirus, it's can protect your computer from virus, and keep your system speed fast. now, i used avast internet security, it can protect my system if i browse internet, and my system speed keep fast..

Best and free and also speed unchanged? little tricky.. Best is Symantec,Mcafee,Quick Heal, Kaspersky.. Free is AVG (I recommend), Avast.. All antivirus effect your computer speed little... none keeps it unchange if they it doesn't trustworthy..

Microsoft Security essentials isn't bad I've been using it for a while now, and it works pretty good and it does not slow my computer also it's totally free Next there's AVG free it's not bad but it does cause some slowing issues, but AVG has a free version though the protection seemed kinda bad to me Also Avira has a free version but for some reason it stops protecting after it's been installed for a while and it also slowed my computer some If you want to find out more info about the antivirus software in my post go to Cnet.co and you'll find a lot of good info there.

I am now many years that use AVAST as antivirus. It updates the virus database once or several times a day. I use the free version, just that basic. I must admit that in fact it still always works in the background to continuously monitor all data input and output of the PC, this means that a minimum of a slowdown in computer performance, there is.

I'm using avast free antivirus,and it's really working good on my computer not only that it also remove malwares.so far I enjoyed and will continue use Avast anti virus.You can also try it, it now you can try microsoft security essentials its also a free antivirus.