Although only 2 lines are modified, I think the main idea is that the handleMissed() function (that is used for checking the number of missed SMSs and calls and do the proper action) was called in two different threads, one regularly at each 100 ms and one when NewEvent occur. The script was not prepared for a continuous regular call of this function but rather for one call during NewEvent and then the blink icon and sound was cleared with other events. Hope I also understood correctly what I am trying to say...