A positive factor in my case is that most of the users I support are responsible people (lawyers, physicians, HR managers) who don't tend to do foolish things, and do tend to take their responsibilities seriously. Users are also informed that they are given administrative privileges as exactly that - a privilege; abusing it (by installing illegal software, for example) will result in having their admin rights revoked.
In fact, if I have to be honest, the most messed up system in the company is probably mine.
