Oh sorry, I didn't mean the tone of it read like it was an issue, but it kinda did.
Yeah, it's just curious is all. It picks up some silly things at times. The professors and examiners get final say though and they can overrule what the program finds (which is likely when it finds stupid things), and they can find things the program didn't.
A friend of mine had the program tell him he was possibly plagiarising from some tiny blog website he'd never heard of.
Basically that website had quoted the same ancient source that my friend had (and my friend had quoted and referenced that properly), but somehow the program decided that similarity was worth mentioning.
I don't know of any cases of plagiarism that have occured in my year yet (although we're not far in, and most people have only submitted a few pieces of work so far which have yet to be marked and returned).
Apparently the most common plagiarism, or unfair practice, that occurs is self-plagiarism, or it's plagiarising by forgetting to reference properly.