RE: Slow uTorrent download speed True, however you can still have more than 10 connections. It's more of a security if many connections are connecting fast. But googling on event id 4226 will help.
RE: Slow uTorrent download speed Do you run Windows Vista? Vista blocks new connections if many connections failed to connect. And what is the whole idea behind torrents? MANY connections. So there's your answer, uninstall windows Vista :p (same goes for other P2P programs).
RE: Kaspersky Go to the kaspersky folder and try to find the sound files (most likely .wav). Try if deleting them works without errors, else replace them with something less scary than that kaspersky pig being raped.