(not sure if this counts as firewall or av, so I'll try here). I've been using Comodo Firewall for a few years now, and the same goes for Avast AV. They seem to work ok together so far. But I've never been sure about Comodo's Defence+ feature. I left it disabled for years, as I thought it sounded like a waste of resources. Then one update a while back i turned it on. But it generally just leads to lots of confusing popups every time I install new software... which often sound scary but I end up allowing most of them as it's the only way to get the software to work. Is there a consensus on whether this kind of software (what would it be called?) is worthwhile? Is it thought to have much impact on resources? Do people generally leave it on or off?