first one cakked the MB. New one is running doze 8. Has not crashed or frozen prior one no blue screens or driver issues either. Does its job which is to intarwweb, write docs and act as a terminal from time to time. Other than having to ask around here for shortcuts it does everything the macbook and mac mini can do for me with as little or less interruptions.Edit, have not had a virus yet in 3 years.Of course does not mean there maynot be one, just that I dont notice it and it leaves my shit alone