After unlocking the bootloader of my Motorola Atrix 4G, things went down the drain a little as things didn’t go smooth anymore. So peeking at the memory management for looking for ressource hogs, I noticed that only half of the device memory was detected.

The problem is already (well) known as it is just a missing parameter at boot. An easy fix is available at the XDA developer forums, flashable via CWM.