There are Killer DMs, Carebear DMs and then most of the rest taking up somewhere in the middle.
Me? I don't particularly enjoy killing PCs. I, however, have no problem when their own actions lead to their demise. Most of the time I find it amusing. It removes that little bit of guilt from my DM's soul ;)
I am certainly a "let the dice fall as they may" type of DM, which can obviously lead to PC death, but I'm not so fond of "save or die" situations. Yep, not so simple to peg.
What kind of DM are you when it comes to PC mortality?