[j-nsp] port mirror on EX causing crash

[Luca Salvatore]

Wondering if anyone has seen any issues with EX switches running port mirroring - specifically seeing the switch generate a 'parity error' and crashing?
I have an EX4200 10.4r5.5, a few hours after turning on port mirroring  the switch crashed.  It threw some memory parity errors which JTAC tells me means the switch is faulty and should be replaced.

The switch in question has been running fine for 3 years, but turning on a ingress and egress port mirror (on a single port) seems to make the switch have a bad day.  The switch isn't busy, and the port that I'm mirroring has about 80 to 100Mb of traffic.  I'm mirroring the port to an IDS and would like to keep it running for the foreseeable future.

Any thoughts on this situation?
Thanks
Luca.