Number 9, number 9. Fedora 9 Preview has been cleared for takeoff!

> Finally: I had to set Selinux to permissive mode because it was
> interfering with npviewer.bin, Pulseaudio, Skype and a couple of 
> other things that escape my memory right at this moment and
> I couldn't fix the problems even though I followed the advice of
> the Selinux troubleshooter so I eventually gave up and turned 
> it half-off.

Reminder: You are using a nightly snapshot.  Things will break, get fixed the next day.

In this particular case selinux-policy broke a few days in rawhide.  It was fixed in
subsequent updates, however the previous break was such that an upgrade wouldn't automatically
fix it.  New installs are fine however.

getsebool -a |grep nsplugin
allow_nsplugin_execmem --> on
allow_unconfined_nsplugin_transition --> off

Make sure these two booleans are set this way to make nspluginwrapper work.

Regarding skype, I dunno.  It works for me with defaults.