If you have your cubieboard stable and do not like the led to blink, you can turn it off.

I wanted to connect my cubieboard with lubuntu to my arduino via serial communication. For that I had to enable a UART and connect pins to my arduino (only RX/TX is needed). I have arduino mini 3.3V on which I have attached some sensors (outside temperature).
By this command you can check if the port is enabled:

stty -F /dev/ttyS0 -a

In fresh installation of lubuntu the ttyS0 is configured and used by kernel and ttyS1 is not enabled. You will get this message for ttyS1:

SSH to my fresh lubuntu on cubieboard2 was not working. I tried it also from the lubuntu itself with the error:

$ ssh localhost
Read from socket failed: Connection reset by peer

I went through many google search results. But I could not find any appropriate solution. Finally did what I should as the first step. Uninstall and install the ssh.

This page helped me to try uninstall with complete removal (also the configuration files). It should work with the command

Cubieboard has thickness 2.00mm 2×20-pin-header that is not so suitable for home hobbiest.
Arduino and other small boards uses 2.54mm pin (0.100inch)

I wanted to install Lubuntu on my new Cubieboard2 so I decided to go for this v1.06 Lubuntu 12.10 image. You have option to have NAND or SD card and I’ve decided to go for NAND because the system performance should be faster than SD.
UPDATE: Download the Lubuntu 14.04 image for Cubieboard2. I found this image on Marcos Costales blog

I followed this video www.youtube.com/watch?v=TeULfhdX1CY and installed PhonexSuite, downloaded image and upgraded cubieboard2. Thanks for it, it saved a lot of time..