Browser: Firefox 3.6.13 So here's the short story: A couple of days ago, I had AVG. And my key was expiring (It was a hacked version), and instead of getting new keys, I decided to just try Kaspersky which I heard was better than AVG. I installed it, did one scan as soon as it was installed, it picked up a couple of Trojans, which AVG did not warn me about. So I scanned, got rid of the trojans no problem. Then I went to YouTube to watch some Classic Game Room reviews, and some of the videos didn't work. So I thought it might have just been the videos itself. I went to my videos, they didn't work either, which was weird because when I had AVG, it worked just fine. I disabled Kaspersky and reloaded my video and the CGR video, and both worked perfectly, no buffering or anything. So I knew Kaspersky was the problem. I googled: "Kaspersky 2011 anti-virus blocks YouTube videos" and "Kaspersky blocks youtube" And both searches generated pretty similar results. Both searches pretty much came up with links that had this little guide: I don't have any of those options. I can get to the Web Anti-Virus and click customize, but I don't have a "Use Streaming Scan" option. Just tried my videos again, and it worked, but there are still some that just don't work at all. Even CGR videos that worked before, don't work I even added "http://www.youtube.com" to the trusted urls, but still no luck. It seems this is a hit or miss thing. Any tips or anything?