I have couple of 6513 (fully loaded with 10/100/1000 blades) with 720 Sups running in Native mode. The CPU is spiking to about 80% every now and then. A wr mem takes about 10 or more secs. It is running 12.2(17d)SXB7. Any ideas? I have a open ticket with Cisco too. Vish Yelsangikar. Netflix.