Thats a virus my friend. What its trying to do is convince you that you are in urgent trouble from the current virus you have and they are the only way to help you. Yet what you are really doing by downloading these programs is just downloading more harmful files that will infect your computer even more. Try some of the programs I have listed above to get rid of that. =)
Well for starters, its a matter of how much its gotten rid of when you first installed it. For me with Avast!, I had encountered a a trojan/worm and I was searching for a solution. My current antivirus program wasn't working so i discovered a new one that solved the problem that kept my computer from crashing. And I'm being honest, my computer was being shut down from this trojan. Now Avast! did what the other programs couldn't and gotten rid of the problem. THEN after my computer seemed to be running normally, I did a scan and it found other hidden files that were infected and were causing damage to my system without me noticing. So now that avast had taken care of my problems, the next stage of an Antivirus is to protect ur computer and to protect it from future danger, and thats exactly was Avast! did. So yes, I can tell which is better, and its from experience and comparison between programs. Overall the characteristics for a good antivirus is to clean your computer of ALL harmful trojans/viruses/worms and then keeping it that way.Well honestly how many of you have actually caught a virus that often? I haven't caught one in years. Spywares are the new thing, viruses are really only much of a threat to the user who clicks on stuff he/she doesn't know. Very rare are the cases where a virus literally infects your system without you actually initiating something(downloading something, opening an email etc).
I honestly wonder how people can claim an antivirus is better than another unless you've caught THAT many viruses to compare lol
Your right that Virus's aren't the main threat, its mostly Trojans/Worms/Spyware/Malware. But yea, I have a friend in the computer field as well, who works with repairing comps and he is also learning to be a penetration tester. This is a person whose job is to test the level of security a system holds. So his future job will be going around to check a systems defense against threats, finding the systems flaws, and then fixing them. Through his experience, he has tested several Antivirus programs in order to check what is the best defense. You are right that you may need multiple programs, but usually its best to have ONE major one for your defense and others for support. From his experience, he has found several computer that were in peril, which had many antivirus programs installed on it, and he would install avast! which would find the problem that these several programs missed and he would fix them. Now, there are cases where he needs to go more indepth than installing an antivirus program and he actually needs to manually hunt down the problem himself, but through his experience he has claimed Avast to be the best. Taking his advice, I myself have used this program with a series of other and have experienced some of the best computer protection I've ever had. See your saying how certain viruses work, but the thing is, if the program covers all these types then your good ^___^. Right now, from his and my experience of trying different programs, Avast! has shown to be the best one.
That´s true - and the best Anti-virus-thing is still .....just dont go to this adultXXX-sites or so. If you dont to things like that every Virus-Program is good enough.
I'm sad to hear that its been playing around with you Mr. Sama 
Well, you might want to check out Comodo, Agnitum or Outpost Firewall Pro??? Not much of a computer tech wizard but those are some suggestions..there's plenty of review centres and guides online to check out what one is best for you 
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