As I see it I need protection in the form of:
1. Fire Wall
2. Spy Ware
And to use Fire Fox as my browser.
Tim, as you can already see by this thread alone, opinions do vary, and for good reasons. Robert uses AVG, but it crashed Justa's computer. Justa has found a minimalistic way to stay protected, but he has been computing since it all started, is pretty savvy and does monthly browser based scans and uses a sniffer. And both of these guys in the know have mentioned being careful or using common sense, which is knowledge based. So your options are endless and end up being dependent on how knowledgable you are and how much time and effort you are willing to put into it.
If you're looking for simplist, than a security suite like you already have is the way to go along with it's system hogging and degrading size (see Gate's Law #1), and the cost. If you stick with norton/webroot, there are confiuration options that can be tweaked to improve your situation. According to this review, the Microsoft suite bogged down the system the least and was the easiest to configure.
http://www.pcworld.com/article/id,125817-page,1-c,firewalls/article.html
The common wisdom for the average user would seem to include what you have listed, plus an anti-virus program. So if you go this way, you may want to consider one of the AV apps suggested earlier. Just make sure to follow Justa's step 7 with any changes in case of conflict.
Since I already have Norton also (but have that firewall connection issue), I am trying this: Zone Alarm firewall, Microsoft Defender anti-spyware, Firefox for browsing and Norton just for anti-virus since I already have it. I disabled everything in norton except the AV and then configured it to be as unobtrusive as possible. So far, no issues and a noticeable improvement in speed. Pretty simple once everything was installed and configured although I believe I have to remember to manually update Zone Alarm from time to time. Just remember to uninstall norton completely, should you ever decide to do that, requires extra steps including the norton removal tool. I have had to go thru this a few times but the info is available at norton support or thru their live chat. I'll be doing this once my subscription runs out.
Do I really need to have these programs perform deep scanning on all drives? I have 3 internal drives; C, D & G and one large external. The external is where I keep all my music (CDs, MP3, backing tracks) and other guitar related files and programs.
Not sure if this is needed, but can see how this would take forever with all those drives and bog things down. But since ya got it, why not do it? Maybe the trick here is to configure the scans to take place when you are not typically using the machine. Then all you have to do is remember to leave it on then.
There's lots of knowledge here, so I'm sure if you need any help with any of this it will be available.
As Red Green says, I'm pulling for ya, we're all in this together,
Hog