[Windflier]

I don’t think Norton 360 will “let me” uninstall it, to change to Microsoft Security Essentials 2.0

IINM, once it’s “in there”, it ain’t coming out “peacefully”.

Boy, that's a fact. I've bought machines that had Norton pre-installed, and it was a bear to completely wipe it from them. It can be done, though, if you're determined.

I don't know anything about the newer versions of Norton, but it used to be a total resource hog, so like a lot of others, I chucked it in favor of something that was a lot trimmer, and really got the job done.

I'm on a Windows 7 machine now, and use Microsoft Security Essentials for my anti-virus software. It is hands down, the best anti-virus program I've ever had.

[Carriage Hill]

I think I’ll just leave well enough alone. It works fine, as is.

[Wilum]

I'm on a Windows 7 machine now, and use Microsoft Security Essentials for my anti-virus software. It is hands down, the best anti-virus program I've ever had.

Dittos what you said. I have four machines set up with MS Essentials, two with Win 7 and two with XP,and virus/malware free for 18 months.