We have some older legacy clients still on 600 series IAD's connected to a TA3000 DSLAM using ATM. We have been having issues with IAD's crashing where you just need to kill the circuit and bring it back so that it re-trains and then its back in service. Before reset circuit the IAD is trained up just fine but not passing any traffic. When you look up the Perf Stats on the PVC you dont see any traffic coming from the IAD... Once we are in the IAD we are able to see the following error under the Last Reboot in system summary: Error Exception. I have attached a screen shot so you can see what I am talking about. This actually seems to be happening globally now. Any ideas out there? Has anyone ever ran into this? Check out the attachment.