MalwareBytes, full scan on my SSD took me 7 minutes and 25 seconds for roughly 16 gigs if that helps anyone.
To full scan my SSD plus my 1 terrabyte (500+gigs used) mechanical hd, took a total of 17 minutes, 48 seconds.
Don't need it?
It's pretty easy to avoid infections if you are careful.
Basically all infections are user-incurred these days, so if you know what to avoid, there's little necessity for anti-virus.
I got one from a flash advertisement about 5 months ago or so. drive by malware is pretty common, since not all AV can catch every malware out there including unkowns, its impossible or arrogant to say you cannot. I use ESET smart security, threatfire and Malwarebytes. I had no idea i had it until i ran a manual scan, research informed me it was a common flashware botnet or some such. The best AV only catches 98% of all test malware, the unknown malware catches are always unknown except for the very few that get uploaded for testing and confirmed as a new threat.
Flash malware last year infected a major Ad company which resulted in several well respected sites such as msnbc...etc,to infect all the users who visited.
point is, you cannot trust yourself anymore. Adblock and constant updates helps of course, but no gurantees as authors develop techniques not made public for months to sometimes years. Rootkits go back to 1998 and never publically known until 2005.
SOME BIG WEBSITES including Digg, MSNBC and Newsweek are being salted with malware-infected Adobe Flash banner ads that take over users.....