Every once in a while a small problem comes up after updates. For a long time I have not had this that was truly noticeable. My Fedora 17 machine for sometime as been perfect, always updated but today after not turning it on for a couple of days I found a Kernel update (version 3.7.3-101.fc17). After installing the update I typed reboot into the terminal as I always do. Started booting fine but then stalled/stopped at the screen with the fedora symbol.
I rebooted the computer and went back to the previous kernel and everything was fine. So some forum checking didn’t show much. A google search however did. I found the suggestion that the kmod have to match and this time around the kmod was not released at the same time as the kernel.
Details of post here – http://www.linuxquestions.org/questions/fedora-35/unable-to-complete-boot-3-7-3-101-fc17-i686-4175447250/
So for now, until the release of the kmod that matches this kernel I suggest going back and using the previous kernel.
UPDATE- The automatic update for the kmod-nvidia never came through as it normally does so as seen in the comments below its a question of installing it yourself.
yum install kmod-nvidia-3.7.3-101.fc.i686
or (depending what applies to your system)
yum install kmod-nvidia-3.7.3-101.fc17.x86_64
Forcehawk
Adventures in Linux and Other Tech. 
Hey
I had the same problem. The fix for me was:
yum install kmod-nvidia-3.7.3-101.fc17.x86_64
Now its OK!
max
Thanks Max, I am installing it now and will report any progress.