I just got a UNO and I am trying to develop under Linux. I load and build Blink sketch from examples and it doesn't blink, LED just stays on. I use a Windows systems and it blinks. I tried setting delay(1), and checked with an oscilloscope for a changing pin 13, but it stayed high.
Enabled both compile and upload watching and it does builds and uploads ok.
Why doesn't Linux blink the LED?