CISCO as5350 crashes with nmap connect scan

I have managed to "reduplicate" at least five times the following scenario with a cisco as5250, with firmwrare 12.2 11t release firmware of cisco: nmap -dinsane -p 1-65535 ip.of.as5350 This causes a "hard" lockup, and the device must be powered off in order to have functionality restored to it...