A few years ago, Cisco bought a company that made application-level firewalls, first an XML-focused product (XML Gateway) that was also able to verify your XML data, later a Web Application Firewall (WAF), which was effectively the XML product with half of the brains ripped out.
I was really looking forward to these products. Layer-3 firewalls cannot protect web sites against application-layer problems like SQL injections or cross-site scripting, so we definitely need something on the application layer and the WAF (and XML Gateway) ran as virtual appliance in VMware, making them ideal for my lab environment. I quickly lost interest after the first cursory contact with the XML Gateway as you could only manage both products with a web-based GUI (and I definitely don’t want to publish blog posts full of screenshots).
Killing a product is never a problem for me; I understand the need to consolidate and redesign products and platforms gained through an acquisition and usually Cisco offers a decent migration program. Killing old and obscure technologies makes perfect sense. Exiting a whole (highly relevant) market segment makes me nervous; I don’t doubt it was a right decision for Cisco, but how can we guess which market segment they’ll exit next?