Noppe,
You are the only one that I have found, that seems to have a clue about how to deal with the upload problem on the Arduino Robot. I am an old guy and don't know much about forums. I see the that number of people experiencing the upload problem is growing exponentially everyday. I don't know if everyone with the problem has seen your excellent post. What to do? Do I relay this information to the moderator somehow and let him disseminate the information?
I admit that I have not had a chance to try your solution, but I am extremely grateful to you for working though the issue and taking the time to tell us about how to fix it. People like you that make everything fun for the rest of us.
I do think that there is a firmware problem that has not been addressed by the Arduino Gurus. It would certainly be wonderful for everyone concerned, if suddenly a miracle occurred and the problem was found and fixed. Determining the problem and fixing it is admittedly, well beyond my abilities or I would try to help.
Thank you again.