Quote from Tsing Tao:
You really have to read the article. It mentioned that the guy accused had images in his cache - something that could have happened to any technically naive individual on this very website not so long ago (remember those getting images in PMs).
I'm certainly not defending the accused individual in this case, but the judge was attempting to draw a distinction between stuff downloaded, etc and stuff that is in your cache, which may or may not be a person's fault (based on all sorts of crap out there - viruses, redirect links, hijacking one's computer, etc.)