what is the most efficient antivirus software?
952022
Trend micro :\n\nhttp://www.trendmicro.com/en/home/us/home.htm\n\nTo download a trial version :\nhttp://cdn.simtel.net/pub/trendmicro/tis15s1329egn.exe
105174
I also have Trend Micro and it's very good for Antivirus.  I suggest Adware, Spybot or Microsoft's Antispyware.  Try the link below to PCWorl.com where you can choose which one you wan to use.
604828
My favorite free antivirus program is the award-winning Avast! Home Edition.\nIt can be found here, http://www.avast.com/eng/download-avast-home.html\nHere are a few of its awards, http://www.avast.com/eng/awards.html\n\nFor a firewall, I like ZoneAlarm http://www.zonelabs.com/store/content/company/products/znalm/freeDownload.jsp
600539
Norton slows everything down.  Any antivirus program will, but Norton makes it REALLY slow.  \n\nI would not use it, there are much better alternatives out there, like Avast! or AVG. \n\nCheers!
1096451
AntiVirus alone is not enough.  While the bigger companies, McAfee and Symantec, are building out a total package, they've gotten pretty pricey for total coverage.  Check out the combination and process documented at http://securitytango.com/   The author is a member of the team from one of the longest running computer advice shows out there on talk radio.
777085
Here you have some good and free antivirus programs:\nhttp://askcomputerexpert.ws43.com/download/\nGet one and also an anti-spyware program!
548239
Of the products on the market today for straight antivirus protection, I'd have to go with PC World's recommendation, BitDefender.\n\nhttp://www.pcworld.com/reviews/article/0,aid,124475,00.asp\n\nThat, in combination with good antispyware, a firewall, and protection against registry alterations and rootkits, will provide your PC with layers of effective defense, as opposed to using a single product that, if compromised, would leave your PC defenseless.
1184461
The best anti-virus is *common sense.*\n\nNot even Norton can protect you:\nhttp://www.jinx.com/scripts/details.asp?affid=-1&productID=219
993201
Norton  Antivirus is the best......
667194
From my professional experience as a consultant:\n\nNone of the Antivirus programs are perfect.  No one package "gets 'em all".  The real question to be answered here is which one is the friendliest to my computer yet still does an acceptable job of detecting viruses?  If I had to choose between Norton or AVG the answer would be AVG every time.  Norton (and McAfee) are notorious for screwing up computers and making user's lives miserable in other ways.  AVG is fast, clean, and does a good job.  It's also free if you're a home user.
181580
Free and reliable antivirus programs are: \n\nMicrosoft Windows Defender  http://www.microsoft.com/athome/security...\n\nAVG FREE at http://free.grisoft.com \n\nOnce you download/install the programs, be sure to UPDATE! This ensurees that you have the very latest protection, not just the latest as of the day it was archived! \n\nAlso, for best results, pick up some free spyware removal programs:  \n\nSpybot Search and Destroy http://www.safer-networking.org\n\nAdaware SE Personal http://www.lavasoft.de/software/adaware\n\nAgain, remember to update before using for the most protection.  In fact, set your programs to automatic update, or remember to update them regularly.
142816
Dump whatever you are using and get AVG Free Antivirus
105788
www.grisoft.com\nAVG antivirus is good and free.
835101
Avast is the best currently.\nYou can get it here:\nhttp://www.avast.com/\n\n(Avast (Home edition(free)) is the only anti virus which on my PC has tracked every single virus. I tried norton (many times it failed especially when the virus was on a pendrive(usb v1.1 @ 124 kb/s) (it usually ended up locking my system despite its high system specs)  ,macafee (Slowed the startup and boot up times), avg (took too long to startup and at times failed to update unless the system was restarted )\nEdit : Avast also support Vista and soon will support x64)
1066871
If you want free use AVAST or AVG for Antivirus (completely free)\n\nIf you want spyware use AdAware SE or Spybot S&E (completely free)
852201
avg is good but we have better products out there. if u wish to try a free one try avast or bitdefender 8. if u really need a good antivirus, try nod 32. its just 11 mb for down load nd only has 2 processes when active. check the free trial at www.eset.com
932309
Kaspersky antivirus\nand\nwww.ewido.net/en/download  anti spy\n\nEnjoy