Questions about selinux

I have just started using selinux and find it very intriguing, I also
saw Russel Cokers interview at The Age and was pleased to note that
selinux is being adopted by the "smarter linux users".

I notice I get alot of avc denied errors on boot, and wondered if they
were normal, I have attached my dmesg output, so if someone could please
look at that.

Another couple of errors I have noticed are:

psidfile_init : contexts did not exist, initialisation failed, error 2

and

id: can't get process context

are these serious?

Also I must have changed something unwittingly, because it worked in the
beginning, the default context in /etc/security/default_contexts are not
being honoured, because when sshing into this machine, you still get a
choice of role, and can change role.

A couple more things, are there policies for apache php modules, and/or
netatalk, or are these things you have to write yourself. I also can't
start X, being told a number of things depending on role and user.

As sysadm_r there are errors about xauth and Xauthority being denied,
and as user_r i get an error about /dev/tty0 not existing.

sorry for the huge list of problems, but I would love to get these sorted.

regards Max