OP2 self-disarming upon entry

My system has just begun displaying this alarming behavior (sorry) today.  
 
Earlier this afternoon I inadvertently opened an exterior door while the system was set to day mode.  The keypads beeped once, as if about to go into alarm mode, but then silenced.  I dismissed the incident.
 
About an hour ago, though, I entered the house from outside while the system was in away mode.  Again the keypads beeped once and then silenced, and I watched the green light appear on the keypad that was in view.  The system had, upon receiving what should was a valid alarm scenario, simply reset itself to off mode.
 
I can replicate this at multiple exterior doors, and the system ignores the alarm scenario and sets itself to off from either day mode or away mode.  If set to night mode, however, and I open a door or trip a motion detector, the system goes into alarm mode, the siren sounds, etc, and all's right with the world.
 
I am running firmware that's about 2 years old now, can't remember the version.  I have the new firmware chip but haven't installed it yet.  I have PC Access and Haiku, if that makes any difference.
 
I disconnected the battery and unplugged the controller, then fired back up again only to find the same problems.  Can anybody suggest anything?  Doesn't do much good to have an alarm that turns itself off, kind of like having a guard dog who licks the burglars hand.
 
I seem to have stumbled upon the solution, though not the cause behind it.  It was a Haiku issue.  I run Haiku on both my ipad and iphone.  I was observing the self-disarming via haiku on the ipad when I realized that upon receipt of an alarm state, haiku popped up the keypad onscreen and self-entered my code.  This did not happen in haiku on the iphone.  I deleted haiku, re-downloaded and set it up, and it no longer disarms the system by itself.
 
This was really weird.  I have never seen this behavior before.  The bug certainly seems to be in haiku, but after the uninstall/reinstall it does not manifest.  
 
Have a great weekend!
 
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