Command-P doesn't work

Command-P no longer prints on my iMac. My whole family uses it, so it's concevable that the kids modified something (although they deny it). I went to System Preferences and reset keyboard shortcuts, to no avail.

Apparently, command-p is actually pressing command-c. In other words, after some experimentation, I found that if I highlight a word, then press command-p, the highlighted word is in the copy buffer. Note that other command combinations, such as command-W to close a window, seem to work fine.

Thanks for the help! 🙂