"What's that? All your .tifs are now giant black squares? Well, you shouldn't be using .tifs. It's an ancient yukky format and it was either patch our shitty operating system against 'malicious tifs' or fuckin' rewrite your shit so that your data is gone and we all know how you'll fare in that discussion."

That has been my favorite Apple fuckup in recent history, because I still see a lot of tifs from designers, photographers and other artsy types, who have traditionally been the folks keeping Apple alive. It's kind of Apple since the iPhone in a single poorly thought out patch.