Hi Jeff,
This is due to a bug being investigated. Please load 12.4.11T2 image, delete all the xml files
created on the flash (root or ipsconfig location
if configured), and follow the procedure outlined at http://www.cisco.com/en/US/products/ps6634/products_white_paper0900aecd805c4ea8.shtml
If your router has 256MB memory, in step 4.4, you may replace the command
"category ios_ips basic" with the command
"category ios_ips advanced".
If you change actions of signatures or unretire any other category, due to another bug, reloading will take about 8-10 minutes with high CPU but router prompt should come back after that.
Since I don't follow this forum, pls send your
subsequent messages on this issue to kemal@cisco.com and CC alyeung@cisco.com
Kemal