Printing is now a lottery - sometimes my computer will deign to let me print.... and sometimes not. I still cannot connect to an external monitor. And the dropping letters when you type 'undocumented feature' is back sometimes. Emails with embedded images no longer have an option to display the images either.
I really, really wish I'd never decided to try the snow leper upgrade (and it's no longer new-install fast either). No one else to blame but Apple marketing and my own darn gullibility.