Updated the Raspberry Pi to kernel 3.12.6 from GitHub, and – finally – there is no longer a ‘tombstone’ following the first console prompt, after boot..

Pidora release 19 (Raspberry Pi Fedora Remix)
Kernel 3.12.6+ on an armv6l (ttyAMA0)
.......................
$ uname -a
Linux rgpi 3.12.6+ #1 PREEMPT Thu Dec 26 17:46:50 GMT 2013 armv6l armv6l armv6l GNU/Linux

Robert Gadsdon.   December 26, 2013.