I have been noticing spikes in my CPU usage. I run v6 with a 2600+ AMD Athlon XP, 1GB DDR Ram and 40GB hard drive. I have HTTP w/AV and AS, POP3 with AV and SPAM, SMTP with AV, and SOCKS. IPS is turned on with Anomaly Detection and DoS protection turned on. Here is the cpu usage graph: