I am wondering if Avast is any good on Linux Mint 8. I download a week ago and firstly I see that it doesn't run permanently, it only runs when you ask it to do a check. I tried running a thorough scan of the entire system and on all occasion an error comes up so it doesn't do anything. If I run a quick scan its ok. Maybe I am not using it correctly. I have updated the database so this isnt the problem. If this error keeps ocurring and it only works when I ask it to then it seems pretty useless to me.
In two and a half years of using Linux, I've never come across a Linux virus, let alone come across one, decided to run it, decided to type in my password and been infected.
You don't need resident anti-virus protection in Linux, unless you're running a web server, in which case there are ways of doing it.
exactly, compared to the hundreds and hundreds of thousand viruses lurking around Windows, I read about "40" existed that could affect Linux, if you're unlucky enough to meet them

Now there's the argument of a shared NTFS partition, and/or shared USB keys that could get infected with malware while browsing in Linux and then infect Windows when you boot into it. I never really cared; I don't dual-boot with Linux currently but will again one of these days, and chances are poor that I'll ever install an anti-virus on it. First I don't share NTFS partitions (+ access denied from Linux into those partitions), I don't use NTFS at all in Linux and I'm being careful with the USB keys, definitely needed at least to transfer files between the two OS (faster than cloud so far

). This said I do mind that there aren't better firewalls for Linux, but that's another topic.