I've been using Fedora for a couple of years now. I was kind of happy with it. I liked Gnome3 and I could handle the minor annoyances. It was stable enough to serve as my work, travel and home opsys.

As F16 reaches its EOL, I installed F18 on a clean PC. Well....

It is a disaster

The installer tries to be simple and intuitive but it is oversimplfied and not handy at all.
It crashed two times before I managed to install Fedora. F16 installed on the same PC without any problems.

I was using KDE until it broke me down with its poor networking (you cannot open+save an Openoffice document from/to the network), then I switched to Gnome + Compiz Fusion which is actually quite good but a little bit unstable sometimes (at least with the open source ATI driver).

I watched a video introducing Gnome3 and its new features and read an excellent article about its basics. I gave it a try by installing Fedora15 on my home desktop and laptop.