My helpdesk department thinks malwarebytes is a virus or malware. They also think fancy screensavers are resource suckers, because everyone knows that screensavers run while you are using your computer . .
We have Norton Antivirus on our workstations and it totally is an annoying resource hog.
I have free McAfee with comcast at home and while there's stuff it does right, I'm currently ticked with it. I got an av.exe virus and it didn't remove it and the computer didn't make it through shutdown properly during manual removal and now my computer isn't booting. I'll be reformatting that partition, reinstalling WinHoes (not a typo) etc. I'll have to give MSE a try. Especially, since Norton is now the free AV from comcast.
OT: Speaking of installation I miss the old stick in a floppy to just reformat the OS partition, because I don't enjoy unhooking things in the tower, because of stupid ACPI & BAD_POOL_HEADER crap. I didn't have that problem during the original installation.