I&#x27;ve been bitten by this problem too.  What&#x27;s extra obnoxious about it is that the client used to work just fine -- but a couple years ago it started randomly hogging an entire CPU core for seemingly no reason at all.<p>I still use it, but Dropbox&#x27;s refusal to do anything about this problem (or even acknowledge that it exists!) is mostly what&#x27;s prevented me from taking the leap to a paid account.<p>It&#x27;s too bad, because Dropbox&#x27;s speed, simplicity and (at the time) minimal performance hit was what I originally liked about it compared to other sync solutions.  Now it&#x27;s missing all three.