if u r using an OS like linux then u can be safe without having an antivirus s/w, since virus builders are much keen on attacking windows os than any other... And i personally feel that due to tough competition in the market each antivirus company tend to make a virus of their own and create an antivirus s/w updation after the above said virus has succeeded in creating a panic in the field of IT.. typical examples are the newfolder virus which only one antivirus s/w claims to cure- NOD32.Similar to that is the autorun virus( healable by using mcafee) and some other notable virus definitions. Well, u said about caring every clicks in the net.... nowadays viruses take the form of pop ups ads and activeX components...while the former one succeed in tricking users by attaching itself to the pc once the user click the cancel button or the close button in the pop up ad, activeX components just confuse the OS... and cleaning viruses thru safe mode or bootable disk may not work as u feel it may do, since most of the viruses find way to restore by adding themselves to system restore... so at the next start up, u wil find the virus in the previous place as such...

U may b aware of trojans and spywares that hide in registry... unless and until u know the exact location, u cant merely sort it out using trial and error method, since an error in registry can b a very serious problem.. and viruses in registry are the most difficult of the lot to trace manually

So i conclude that having an efficient antivirus program with an updated virusdatabase can be of great help to u rather than a system too vulnerable to attacks

Thanks for your suggest friend,
But from another point of view, the PC with antivirus installed, is too slow. as antivirus is running in the memory that is running auto-protect or something like that, it slows the system down.
Yeah, of cos, the viruses take place in system restore. we can disable the system restore too.
And in the registry, they always take place in HKEY_Current_user>Softwares>Microsoft>Windows>Currentversion>Run
and HKEY_Current_user>Softwares>Microsoft>Windows NT>Current version>winlogon
and another 4 or 5 places.
Or we can use 3rd party softwares that scan startup programs to locate virus and eliminate manually from safe mode or from bootable OS.
What i want to mean is, For a person who is experienced for computer,killing viruses, hardwares and so on, will you prefer to use without antivirus or with anti-virus?
Am i right? please give some suggestions for my suggest.
Thanks you kavitha,
Regards,
-silver-

By 3rd party softwares, u may mean sumthing like spyware doctor, regedit , or sumthing of that sort... it may help u sumtimes, but can be a problem too at times... and using antivirus softwware like avg will not slow down ur system like mcafee or kaspersky... u said a good pt that the viruses in registry occur at 2-3 places... but u left out one particular place:
Hkey_local machine explorer there viruses can hide assuming the state of an activeX component... AVG free version detects it... and gives u teh path.. teh way i sorted out the problem is that i went to the locations and deleted the values ... but it wud be dangerous if u deleted the wrong value, since there wud b 100's of them in the above specified location... so what i advice is that haing an antivirus pgm will do no harm.... 1 way to sort out the problem of slowing down the system is to disable the addition of the software at places like startup and quick launch

Yeah fri,
I do know the places you said. Of cos the viruses that take place in ActiveX components may be exceptional. But if we decide to use anti-virus, we will have to use two or more anti-virus programs to be able to detect every viruses.
Only one of anti-virus program will be useless as the companies that program the virus to promote their product. Isn't it? so two or more programs of anti-virus will slow down the PC.
Instead of installing anti-virus program, what if we have the ability of anti-virus program? If we are experienced about programming and virus killing skills, we will be able to eliminate every virus.
Installing and slowing down your PC by anti-virus software or be aware of every clicks that you do, eliminate every virus by ourselves and pleased by a fast PC. What do you prefer?

-silver-

Ahem,, i prefer not to take risks... there are immense amt of methods and options thru wich u r pc can get infected... Well, installation of a pgm like AVG free can never let the performance of u r pc low..Take the example of the newfolder virus that i mentioned earlier.. If u r computer got infected with it, then no antivirus s/w can detect that u r pc is infected( ie, even pdcts from the manufacturer itself cant do it).. So if ur pc is infected, had u made it secure by use of an antivirus program, u could have saved both u r time and ur system..
Bothering of every clicks u make may not help u all the time. My point is "Better be safe than worry".. Hope u got it

ha ha
Yeah, i got it since i think about not to use anti-virus :)
Thanks you for replying me in patience.
But i think there is a way not to use anti-virus. (i don't mean everybody but the ones who have ability to defend their selves.)
Those ones may be so rare.
does (even the pdcts from the manufacturer itself can't do it) means antivirus is useless in that case? so why don't we uninstall our antivirus as it's useless?
Anyway, friend, can we be friends?
if we can, feel free to add me as your friend. my mail address is sas.silverdragon@gmail.com (You can see in my profile)
Thanks you again,
Regards,
-silver-

well, what can i say? If u r so confident, then u may go ahead with u r decision. But i will stick onto my motto "Prevention is better than cure". and ya , we can be friends