Serial problems on the Uno can usually be cured by upgrading the 8U2 firmware.
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1285962838 see post #10 especially.
Serial problems on the Uno can usually be cured by upgrading the 8U2 firmware.
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1285962838 see post #10 especially.