A customer of mine bought an HP PC (one of those new ones where the PC and the screen are in one unit) and it had porn on it. He bought it from a well known company named after a desktop stationary product.
Never did find out what the conclusion of that was as he was well intent on taking the PC back to them.
Like he said to me, what if he hadn't found the porn and his grand children had instead?
And then there's people on here laughing at the thought of compensation - OK that might be going a bit OTT - but what if your grandchildren encountered hardcore porn on a PC you had bought from a company, would you be laughing then?
I guess the situation here is a bit different though - wanting to claim compo over a pre-owned item is a bit silly - that's just the risk of buying pre-owned items I guess!