Also makes my Logitech K520 nuts... Writes its own and sometimes looses writing totally. Yes, batteries have been changed... With Linux oh1mrr.ampr.org 4.2.8-300.fc23.i686+PAE #1 SMP Tue Dec 15 17:13:23 UTC 2015 i686 i686 i386 GNU/Linux Works fine... Jarmo -- конец