I am also experiencing this issue. I've had my flirc 2 weeks and it mostly working great, with the one exception of sometimes repeating keys endlessly. What happens is what many others here reported - pressing one key once on the remote and flirc outputting command endlessly, it keeps sending presses inifinitely until another key is pressed on the remote. The remote is not a Logitech harmony though, as many others have, its a remote originally shipped with a Dune HD Smart B1 mediastreamer. Firmware is 3.6 with inter key delay 5. I have checked that the remote does not send repeating keys. I have also tried the noise cancelling option, and it does seem to help, but then instead the remote reacts extremely sluggish and has a delay between accepting presses, like press one key then wait 1-2sec and then press again. I am using flirc on an Asus chromebox with Kodi 15.2/openELECT 6.0 fritsch EGL build.