which anti-virus software do you use  

I am using nortan anti virus 2007, actully I am a using nortan since a long time due to its performace and It works well without creating trouble and easily detect virus, malware, spy ware, Trojans.

we use norton then, but now we use avg anti virus and anti spyware.
it works well for me,
now we are using it for about a year..
it is good to have a back-up because today different kinds of viruses are about to attack our computers

For me in the past I used to use Norton antivirus but after a while I discovered that Norton is heavy on the computer in the startup and not so well in trojans so now I'm using Kaspersky the russian antivirus it is more lighter and efficient.

I use avast anti virus it is very good it has got web shield
standard shield , out look express shield, it does not make the machine slow unlike the Norton anti virus makes the machine to become slow so I think avasti anti virus is the best.

I use generally two antivirus softwares. They are Avast Antivirus, and AVG antivirus. They are very efficient, and can fight well. I have free edition of both of them, and am using them for almost two years.

Avast antivirus fights well against Trojans, and other malicious programs. AVG antivirus, is well equipped to fight small threats, that other reputed antiviruses sometimes overlook while scanning. I am satisfied with both.

But there are times when none of them can defend against any dangerous virus. Then I have to format my PC, and reinstall the OS.

I use NOD32 it's pretty good because it recognize a lots of viruses

i use norton systemworks 2006

im using AVG free edition. so far so good.

I always use Noton Antivirus on my PC..

I use Avast Antivirus 4.7.
It is good enough.