Ack! Only 4 uarts with FC6!

[Tom Horsley]

> Hmm, a real mystery.  Does X start up correctly when it gets to runlevel 5 ?
> Might be interesting to boot in single user mode, and init 3, then check
> out the X logs to see if there's any explanation in there.

This stuff is sounding like an uninitialized variable in the kernel option
parsing code. On x86_64 xen doesn't work, non-xen does (for me),
on i686 someone else said the non-xen kernel doesn't work. Now we
have the rhgb option failing to work. I hate when that happens :-).