@cadet I'm no expert but I would have looked at the data sheet and measured up to make sure that the hardware are not defective in any way. http://ww1.microchip.com/downloads/en/DeviceDoc/39662c.pdf Or the radio. //Mattias

And be aware of this thread where the ENC module is hanging after a while.. http://forum.mysensors.org/topic/536/problems-with-enc28j60-losing-connection-freezing-using-uipethernet-or-ethershield-read-this

I choose to reply to this very old topic because I updated to the latest UIPEthernet and this issue is still happening to me. I was about to replace it with a W5100 but came across this and tried it, compiled, uploaded, and here it goes. 24 hours of continuous web serving using an Arduino Mega 2560 and still counting! I wish this get incorporated into UIPEthernet

@Yveaux thx!