I've never used the single-user version, but I used to have the enterprise version for work, and that was a dreadful resource hog.
After the work experience, I deliberately avoided McAfee for my own machine, and got Norton instead.
I've no reason to think McAfee wasn't successful enough at what it does. Neither I personally, nor the company (that I'm aware of) had security incidents that should have been picked up, but weren't.
Then again, I've hardly ever had security incidents at all, really - probably because I'm quite conservative in which websites I visit, and never open or click anything from an untrusted sender. Sometimes not even from a trusted sender, if it doesn't seem like the kind of wording they would use, or purports to be photos of a holiday they'd never mentioned they were going on - that sort of thing.
Not saying security software is redundant. I view it as similar to house insurance, in that it's reckless not to have it, but there are not that many occasions when it really comes into its own. But you only need once, for it to have been worth it.
Not sure £2 p.m. or £24 per year is such a saving. I think I only paid £30 for Norton 360 - but might have been a special offer, at the time. Dunno what the regular price is.
Edit: in the light of the other posts, mine would cover multiple machines too (I'm sure it's at least 3, but it might be six). It's academic that I don't actually have any other machines, but if I got any, they could be added on the same license.
Edited by TLM (Fri 16-Nov-12 15:49:16)