20:10:29 : ERROR: Fout in yum-transactie : [u'ERROR with transaction check vs depsolve:', 'raspberrypi-kernel < 3.11.6 is obsoleted by raspberrypi-kernel-3.11.6-3.20131023git10bc582.rpfr18.armv6hl', u'Please report this error at https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora&version=rawhide&component=yum']
I'm sorry but this is not a bug in yum. Yum just reports you an installation problem that is in fact somewhere else, maybe even in poor packaging of the kernel in question. Unfortunately without any more detailed information I am not able to tell you how to proceed to clean up your system and get rid of this error message.