I have fedora 18 x_64 with KDE, i recently installed cinnamon to try it out, via yum
yum groupinstall "Cinnamon Desktop"
the installation went fine. Then i rebooted the system and selected Cinnamon on the login screen i was then greeted by a sad looking computer image with the message
problem has occurred and the system can't recover. Please log out and try again
[ 77.071602] cinnamon: segfault at 58 ip 00007f2e2ade7640 sp 00007fffd2ee50d8 error 4 in libcogl.so.11.0.3[7f2e2ad97000+8e000]
[ 78.843014] cinnamon: segfault at 0 ip 00007fb27fff68a0 sp 00007fffb088e138 error 4 in libcogl.so.11.0.3[7fb27ffd3000+8e000]