Just installed the ‘final / released’ version of the Raspberry Pi 3.8 kernel, from https://github.com/raspberrypi/linux/tree/rpi-3.8.y, and everything seems to be behaving..   This is already based on 3.8.6, so no need (yet) to apply any ‘incrementals’…

Fedora release 18 (Spherical Cow)
Kernel 3.8.6-pi on an armv6l (ttyAMA0)
………………..
# uname -a
Linux rgpi 3.8.6-pi #1 PREEMPT Fri Apr 12 20:41:26 BST 2013 armv6l armv6l armv6l GNU/Linux

Robert Gadsdon.   April 12, 2013