I have the Nook Color running cyanogenmod 7.1 from its internal memory. Just recently its has started locking up, at random times it will freeze up while im using it and it will be stuck on whatever screen im on. Then i will have to hold in the power button to shut it down. I have tried changing performance settings (CPU min/max freq, governer...etc) and hasnt seemed to help, i even tried removing beautiful widget and so far nothing seems to help. Anyone had similar problems or now what this may be? Thanks