I use cubiuntu 0.6 with 3.4.61+ kernel. How long uptimes have you gyus had? My uptimes are from about 4 days to two weeks. Suddenly cpu usage jumps to 100% and I can't ssh to cubie and cursor doesn't move/no response to keyboard. Might it be memory or cpu related problem? How can I change the cpu speed to lower value to test if that's the case?