I've been using fedora 10 a few weeks.

No problems. I am using the proprietary Nvidia driver from rpmfusion, no problem. Not one single crash, freeze, error of any kind. I have been using RPM based distros almost solid for 2 years (Mandriva, Fedora, PCLOS mainly, some Debian ones like Sidux and Mepis for brief periods, Ubuntu, but I found it to be much glitchy, every release on my machine), no problems with dependency Hell, I've had no problems installing packages. I've installed many packages, and I upgraded to stable 10 today, no problems. I'm running the 64bit version. I'd go so far to say it is one of the smoother running distros out of many I've tried, almost close to Sidux.

As to those commenting on MP3 playback and other things, I suggest looking at "autoten" (google it). I used it and it worked nicely, plays every media file I've tried, and no I'm not affiliated with it, I just found it to be a useful Fedora tool. Installs many things automatically (like flash, Nvidia (but I installed it manually prior to finding the tool, so I don't know if that works), Google products, codecs, etc.