Initially, Cisco and ISS were happy with Lynn presenting his research result. They changed their minds at the last minute. Lynn gave an interview to Wired that talks about some of the details; I am impressed with his integrity in this matter.
 . . .
I can't imagine the discussions inside Cisco that led them to act like thugs. I can't figure out why they decided to attack Michael Lynn, BlackHat, and ISS rather than turn the situation into a public-relations success. I can't believe that they thought they could have censored the information by their actions, or even that it was a good idea.

High praise for Abaddon's integrity, and a well-deserved criticism of Cisco's actions, from the crypto-luminary Bruce Schneier in this month's issue of Crypto-Gram.

Crypto-Gram: Bruce Schneier on the Cisco/ISS Story