In those situations I normally just go out and buy a notebook and pen or just print out a large report of everything I find & how to fix it then I tape it up to some place large and noticeable like a door, someones's screen, or on someone's huge ass. I would leave without anyone seeing that I was even around. No labels or accusations needed... it might even scare the **** outta peaple and litterally force them to do something.

I also find in these types of things it helps when you don't say "I Could do this and that yada yada yada". No need to do cartwheels around the office if you know what I mean.