I have a Zyxel switch that I had to disconnect from my network because every once in awhile it would just go nuts - I'd get a crazy amount of traffic and upward

I have a Zyxel switch that I had to disconnect from my network because every once in awhile it would just go nuts - I'd get a crazy amount of traffic and upwards of 80% packet loss across my network. But just for a few minutes, then everything would go back to normal. Took me a while to narrow it down to the switch, and I'm still not really sure what was happening, but it hasn't come up again since I disconnected it.