Likewise, if it happens again I'll open a ticket as well.. I ended up getting a maintenance window since we jumped from a v7.3 code to the 8.0.30 code, to pull the power and do a cold-boot. Still no crypto key or SSH... So maybe I won't experience ...
Same issue with a stack of two ICX6610s. Happened after crypto key generate for SSH use... Showing CPU tasks before reloading appl and tmr were the only ones causing the high CPU. Basically all network traffic was dropping... Uptime was less than ...