I am constantly experiencing this issue and it is a pain to have your laptop battery drain soo fast and general performance drop soo much. I have to constantly restart or sleep cycle the laptop to temporarily bypass the issue. But let us be proactive and find a solution. Just my input: I noticed that I ONLY experience this issue at the office. The key difference working from home is that I have unrestricted internet access. At the office, the corporate firewall/web gateway prevents access to Kaspersky servers (unable to update database, not sure about KSN) Hope this bit of information helps. I will try disable KSN the next time and provide feedback