Error in the Arduino Example listfiles

Using Arduino Storage
1

In the Arduino 1.0.5 example named listfiles there is a mistake.
Instead of
if (!SD.begin(10)) {
Serial.println("initialization failed!");
return;
}

it should be written

if (!SD.begin(4)) {
Serial.println("initialization failed!");
return;
}

because on the Ethernet/SD shield the value of CS for SD is 4

2

That is not the only error if you are using the ethernet shield. (add: If you have a Mega) You must disable the w5100 SPI or you will have a SPI bus contention problem.

  Serial.print("Initializing SD card...");
  // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
  // Note that even if it's not used as the CS pin, the hardware SS pin
  // (10 on most Arduino boards, 53 on the Mega) must be left as an output
  // or the SD library functions will not work.
  pinMode(10, OUTPUT);

  // If you do not disable the w5100 SPI here, you will have a SPI bus conflict.
  digitalWrite(10, HIGH);

  if (!SD.begin(4)) {
    Serial.println("initialization failed!");
    return;
  }
  Serial.println("initialization done.");

Other SD shields use D8 as the slave select.