I live in a city where 'Brown Outs' are relatively frequent and sometimes they cause a premature shutdown of my iMac. Generally BOINC recovers well and continues on its merry way. However occasionally it gets its Bytes in a twist and produces one or two WUs with errors. OK I hear you say, a small loss and I agree. However from that point onwards, despite having produced hundreds of thousands of valid results from this iMac alone, I go through three of four days of punishment where a large proportion of my results languish in PV jail. I really don't understand this knee jerk reaction from BOINC