Once upon a time,I installed AVG Antivirus Free Edition.One day , I started to give me problems : the virus definition must be updated daily..the software can’t detect certain virus known as trojan horse and worms…At last my pc crashed.I have to reinstall windows and pushed AVG out ( You’re fired !!! ).Once upon a time , I used to download AVG Antivirus Free Edition , it was my favourite antivrus software.
Then , I downloaded Avast Antivirus Free Edition.The interface looks funny,just like a media player.The scanning result was lousy , it could not detect trojan horses and dangerous worms.Avast was fired too!!!
Secondly, I bought Norton Antivirus 2006 , it still cannot detect dangerous viruses.The result is the same as McAfee Antivirus .Once upon a time Win32.Brontok was classified as a dangerous trojan horse.Norton and McAfee could not detect Mr.Brontok.At last I uninstall Norton before the license expired because Brontok virus have multiplied all system and document files in the pc.Luckly I managed to download Brontok removal tool…And this time I installed Avira Antivirus Free Edition.The removal tool could not work and Avira recognised this tool as a VIRUS instead!!!
I have to uninstall Avira and run the removal tool and managed to remove all infected system files.It was just a silly move when I installed Avira again into my pc.Updating virus definition files was smooth…Avira Antivirus served my pc for three years.Few months ago , Avira started to give me problem : the updater server was always disconnected when it downloaded 30% to 50%.I have to started all over again to update.Avira seems to be stupid to ask the user :”Is this a trojan horse?”How do I know that?This antivirus is stupid.It happened several times and I told Avira : “You’re fired”.Avira could not identify Antirus 2008 and Antivirus 2009 as dangerous worms.My pc crashed again.Antivirus 2008 took over my pc and remove the start menu and all hard drives are missing.I have to reinstall windows again.
I downloaded Comodo Antivirus and use it for a few days because it uses a lot of RAM.
I purchased NOD32 and experience the same as AVG , Avast and Avira.
At last , I bought Kaspersky Internet Security 2009.I’ve tested that I can identify Antivirus 2008 and Antivirus 2009 as viruses .Hooray to Kaspersky Internet Security : removed and deleted the infected file effectively.
Kaspersky Internet Security is the best compared to other antivirus softwares.