Is your iMac not shutting down?

IMac
Image via Wikipedia

Good troubleshooting in this thread at the Apple Discussion forum. After some effort C.D. Tavares finds this out:

The culprit turned out to be ShoveBox.  Apparently, I failed to take it out of the login items earlier, or if I did, I failed to notice the reboot worked properly.  Or, perhaps I made the assumption that “ShoveBox is so simple it couldn’t POSSIBLY be the problem (BZZZZZZT!)”

The bottom line is that sometimes we rush through troubleshooting and fail to notice the information it gives us. Being careful and methodical is just as important as knowing the technical skills. Very few IT people I have worked with have been wise enough to learn from their own mistakes.