There have been a few isolated incidents. Most of this is media hype (well, unless you were the victim). There is plenty of room for Gators as well as people. The trick is to keep your awarness level up, don't feed 'em, and pretty much stay out of their way. A lot of folks carry a handgun these days, and most anything can and will kill one of those lizards.
Frankly, Deer kill more people each year than Gators do. You have to keep things in perspective. I believe you have a much better chance of winning the Fla Lotto than being what we UF folks call "Gator Bait"