I had a villager “disappear” yesterday.  It was a 15-year-old male.  I paused the game before heading off to church at 8:45.  After church while having lunch I turned it back to fast speed.  The villager in question was between the crops and research table.  I clicked on him and was dragging him to the beach to start clearing the debris.  While doing so the program went to the menu screen.  I don’t know if this was due to the bug or if while dragging I hit the menu button, but when I went back to the game, I tried to find him to complete the drag to the beach, but he was gone.  He was nowhere to be found.
I using a Treo 600.  I’m running from the internal memory.  It shows I have 8.3M of 21M free.  I’m also using the updated program.
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The VI