I received my Arduino UNO R3 yesterday and after long hours of research and attempts to try to install it, I am about to pull my hair out.
I installed the Arduino 1.0.1 for both O/Ss: Win XP SP3 and Ubuntu 12.04. On the Win computer, the IDE works fine, but the board is never recognized when plugged in (even though the Green LED is on and the orange for pin 13 flashes), so I am not able to complete the Arduino instructions to properly install the drivers. After 4 frustrating hours trying on Windows, I decided to install the IDE on my Linux O/S (same computer, BTW). The program installed without problems, but the Serial Port is grayed out. I already tried checking the groups, I am added. Also when I check the devices: ls /dev/, only my USB mouse receiver is recognized and never my UNO. I don't know what else to do. If I can make it work in one of the operating systems, I'll be a happy camper.
Please help! I will appreciate it immensely!