Joe, I strongly recommend every 6 months. Yes, the processor has a=20 shutdown feature on overheat but every 10 degrees C above 25 C shortens=20 the life of electronics by one half. Thanks, rich! On 8/4/2015 1:31 AM, IVP wrote: >> When was the last time that you serviced your computer? > Not soon enough ago (there's some grammar in there somewhere) > > Joe > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .