I see some people here are very nervous about connecting to the internet due to the nasty stuff floating around, and others who aren't concerned at all. I'm going to describe what I do, and those who really know their stuff can tell me whether I'm doing anything wrong, if there are other steps I should be taking, etc. Ideally, this thread will become "The Complete Guide to How to Keep Your Music Computer Virus-Free Yet Still Use the Net When Needed."
 
1. My computer usually isn't connected. I connect only when I need something, and go to sites I trust like Cakewalk - I don't surf around.
2. I have Microsoft Security Essentials installed, so I figure that will catch anything excessively weird.
3. If I get any kind of notification, e.g. an update to Adobe Flash is available, I never click on it. Instead I go to the Adobe site and download the update from there.
4. I don't download anything unless it's something I've sought out to download, and only from company sites I trust (e.g., driver update from the TASCAM site, Windows update, new trial version plug-in from Universal Audio, etc.).
5. I have an older Mac running Snow Leopard that I use for general-purpose surfing and downloading. It's Intel, though, so probably not as safe as PPC (although it seems most browsers are incompatible with it anyway).
 
 
 

I do basically the same thing as you with my DAW.
 
Except for the Mac part. 
 
I also generally load updates and demo SW on my laptop that I use for surfing and whatnot first before I load anything on my DAW.

I do basically the same Craig, with the exception of the computer stays connected to my motum at all times. That way I get Microsoft updates automatically. I'm also on Security Essentials. I have not had any issues in the last 5 years. I have a second drive that I keep things backed up on. I don't know, maybe I have just been lucky, or living right. I wouldn't be to upset if something happened anyway, I am way over due for a new computer.

I do the same thing except I do my internet surfing via linux.

Don't forget to periodically check the firmware of your router for updates.  Many routers had older SSL code and were vulnerable to the Heartbleed bug.  It doesn't do a lot of good to run anti-virus software when a hacker can just hack into your entire network and watch your internet traffic going by.

I do basically the same as Craig. I don't have anything configured to download or install automatically, everything is set to notify. I do occasionally turn off the network on the DAW when tracking, mixing or mastering to make sure I don't get a notification or something at an inopportune time.

I use my pc for everything and just avoid the Photobucket site as it's the only one that tried to destroy it (in recent memory).

Grum.

Music PC is on internet with virii program and web blocker.
 
all my programs that update are set to ask or tell me about an update never auto update.  Generally I do my own updates manually once a month check and update.
 
I create a restore point for windows before I install ANYTHING so I always can revert back if something goes wonky.
 
all major files are archived or copied to an external USB drive and once a month I pull out a clone drive that is not hooked up all the time mirroring my backup drive.
 
I also don't drive in bad parts of town after dark, walk down alleys with no lights. 
 
being aware in real life as well as on the internet your pretty much safe, even though things can happen that are out of your control

I have my wireless adapter turned off unless I need an update or do limited web surfing and have the usual antivirus, firewall stuff.

Scan downloads with Malwarebytes unless you totally trust the site. I use MSE but I find it misses a lot of adware.