I like Baidu. Dear cruelsis, if you're worried about Baidu not doing so well as Qihu in proactive, then, please, remind me again why you use Comodo FW together with it? We know Qihu is a little better than Baidu in its proactive module, but it is not enough if it's not "perfect", and Comodo is "perfect", that is, close enough to being perfect. While they're improving their proactive defenses, Baidu have apparently fixed for good the update problems, and have established themselves to me as one of the best AV detection rates along with a very, very lightweight dual engine. It's certainly one of the lightest AVs out there. Their only outstanding problem now – i.e. apart from other minor issues – is with the still high number of FPs, but I'm sure they're working on it too.