However anything you stick inbetween here and there does have a speed penalty. Some more than others.
There are some that chase after which suite wins some magazine article or editor's choice, but here I'll share my simple brew. I've yet to have an problem for over 10 years. The brew has changed but here's today's cocktail combo.
1. Free AVG.
2. Zonealarm (for the NT/2000/XP/2003 machines
3. Scans with Housecall, Ewido from time to time.
4. Any non-Internet Explorer brower (Opera, FireFox, SeaMonkey, etc.)
5. Turn off email preview. It's a possible exploit and a definite information leak.
I never open attachments and don't use POFO or other such sites.
Hope this helps.
I have just downloaded a trial version of BitDefender 9 Internet Security - it came out as the most efficient in this month's (March '06)PC World test. But since I downloaded it, my web page access has really slowed down! Also when it first installed it did a file check and found no viruses or spyware on my system (not a normal result when I have installed anti-spyware/virus/adware in the past). Has anyone else installed this and used it in the last 2-3 months? Any info would be useful.