NetScreen Announces Deep Packet Inspection Firewalls

Trying to make Gartner's dreams come true, NetScreen announced new "deep inspection firewalls," prompting "Richard Stiennon, vice president of research at Gartner, Inc., [to say] 'because of the new worms, malicious code and cyber attacks that are now targeting application weaknesses and more applications and protocols are tunneling through firewalls, firewalls must provide a wider range of intrusion prevention capabilities along with advanced centralized management functionality.'"

Only The Register reported the cost of running such a system on a real network:

"Robert Ma, a Senior Director of Product Marketing and Management at NetScreen, explained that because Deep Inspection looks deeper into traffic there is a trade off which means users looking to maximise performance should still consider deploying separate IDP and firewall appliances. For example, NetScreen's low-end 5GT firewall runs at 75Mbps normally but at only 18Mbps with Deep Inspection technology activated, according to preliminary figures."

I wonder what speed those inline "separate IDP and firewall appliances" run at?