A quick scan of the F.lux forum itself and the six or seven HN articles posted here in the past 90 days shows lots of people having issues. It&#x27;s really not an easy problem because it&#x27;s trying to do something that operating systems aren&#x27;t great at and don&#x27;t really give you a clean approach to tinker. And video drivers are some of the worst code out there. But I&#x27;ve used this thing off and on for years and it&#x27;s always been glitchy. If you follow Lorna&#x27;s Twitter you&#x27;ll see she rants about all the lights in the house going nuts on occasion, too.