Often I open dmg and it appears on my desktop. I install whatever is inside and the eject the image from the desktop and it goes away. Then a moment or two later (or even after a restart of the imac) it reappears on the desktop. This happens often but not always. Even if I eject it from within disk utility. Then the only way to stop this behavior is to delete the original dmg file. Does anyone know where I might look to see why this keeps happening? I've checked all the startup items etc for any unusual entries and none found.
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