For those (like me) who couldn't wait, installed Firefox 3.6 from rawhide and then totally forgot about it
yelp-2.28.1-1.fc12.i686 (gnome-help) loops endlessly in certain circumstances (e.g. pressing F1 in Nautilus)
Diagnosis (not by me):
Incompatibility with xulrunner-1.9.2
Solution (by DJ Lucas):
su -c "yum install rarian-devel"
yumdownloader --source yelp
extract and explode yelp-1.28.1.tar.bz2
Download patch from http://www.linuxfromscratch.org/patc...-1.9.2-1.patch
cd to yelp-2.28.1's parent and apply patch:
patch -p0 <yelp-2.28.1-xulrunner-1.9.2-1.patch
su -c "make install"
Installation is in /usr/local.
Thank you for your atttention!