zoomkat:
The layout on my clone is somewhat different than the shield in the pix. The resistor (it seems to be four resistors), on two of my clones has 511 on it, and these shields don't have any issues so far.edit:
Per the below chart, 510 would be 51 ohms and 511 would be 510 ohms.
then i dont know what could be the problem. i guess i will buy a spi sniffer and check the communication between arduino uno and the ethernet shield. its a useful toy to have 