I think it is just a glitch. All I have to do to stop it is hit the opposite button of what ever is messing up. I never heard of anyone else having the issue before.Wait! I think we have a pattern here! YOU have an association with each of the malfunctioning remotes...Coincidence or... The only flaw (which may not be a flaw after all) is I don't know you and my 550 has done it. HOWEVER I did buy it refurb so maybe you DID have it once and returned it?