We have a 7206VXR with an NSE-1. We have recently been suffering system hangs where physical interfaces are active but all L2/L3 forwarding has ceased. No console or telnet is possible. We have swapped the NSE card several times through maintenance and memory, reseated modules but we are still suffering this problem. As there is no crash, there is no crash info, so only a cold boot is possible and the system returns to normal status until the next freeze. The time in between system failures is sparodic and our monitoring tool does not indictae DoS attacks. Our secondary 7206VXR with the same hardware and IOS does not yet suffer this problem.