Yep, that annoys me too. Really, anything that interrupts whatever I am trying to accomplish is irksome. A good example is not being able to find a stapler when I am in the middle of some stupid paperwork task. Or worse, finding a stapler and then it is either out of staples or jams when used. In general, my tolerance of interruptions when I am focused on something is quite low.
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"Righteous indignation is best left to those who are better able to handle it." - Bill W.