I have enabled '/dev/ttyUSB0' under Tools -> Serial Port. I have also selected the correct board (Duemilanove with Atmega 328) from the list. Yet, I am not able to resolve the issue. I have searched online as well and none of the other responses for this problem seem to be working for me. Could someone tell me why I am encountering this issue and help me resolve it?
Update: I tried turning the onboard Atmega and fitting it in the other direction. Now, I encounter no problems uploading, but nothing happens afterwards. The onboard LED also does not seem to be blinking.