I have a 'very-recently purchased' Arduino ethernet with the usb2serial adapter.
It works flawlessly with Arduino 022 but I encounter programming problems, the usual 'avrdude: stk500_getsync(): not in sync: resp=0x00', if I try Arduino 1.0beta4 or RC, I've tried to reset the Arduino before programming without success.
thanks,
Paolo.
I found the solution browsing thru the forum... in the boards.txt, the programming protocol has to be changed from stk500 to arduino.
after that Arduino 1.0 manages to program my Ethernet board as 022 always did.
ciao,
Paolo.