Hi Has some pointed out the high cpu bug came back again to 1.3.8, since I'm using a RaspberryPi I notice this alot. In my Pi bitsync stops responding and says with high cpu usage for long periods of time. One thing I noticed is if I change the nice value of the main process to say 10, it unblocks and starts to respond to requests. Other thing, bitsync gets confused when 2 sync folders have similar names. Heres my setup. One raspberrypi and one windows 8x64 laptop. The 2 have version 1.3.80 installed. On the raspberrypi I have 2 sync folders with 2 different keys r1 : /mnt/bitsync/HOX/DCIM r2 : /mnt/bitsync/HOX2/DCIM On Windows8 w1 : D:\Pictures\HOX w2 : D:\Pictures\HOX2 So her is what happened, bitsync tried to copy the .thumbnails folder I have in r2 to w1!! Now in w1 I have empy .!sync files with the same structure as on w2. I notice that only folders that have an initial dot got confused an bit sync tried to cross copie. Here's some logs [2014-04-07 18:28:42] Blocked downloading file .thumbnails\.thumbdata3-1763508120 due Connection closed [2014-04-07 18:29:38] Blocked downloading file .thumbnails\.thumbdata3--1967290299 due Connection closed [2014-04-07 18:29:48] Blocked downloading file .thumbnails\.thumbdata3-1763508120 due Connection closed [2014-04-07 18:30:42] Blocked downloading file .thumbnails\.thumbdata3--1967290299 due Connection closed [2014-04-07 18:30:53] Blocked downloading file .thumbnails\.thumbdata3-1763508120 due Connection closed [2014-04-07 18:31:05] Blocked downloading file .thumbnails\1370649745477.jpg due Connection closed [2014-04-07 18:31:05] Blocked downloading file .thumbnails\1370649745312.jpg due Connection closed [2014-04-07 18:31:08] Blocked downloading file .thumbnails\1370649745639.jpg due Connection closed [2014-04-07 18:31:08] Blocked downloading file .thumbnails\1370649745810.jpg due Connection closed [2014-04-07 18:31:08] Blocked downloading file .thumbnails\1370649746415.jpg due Connection closed This showld NOT EVER happened, since this 2 folders have 2 separated keys.