Fedora :: Disabled SELinux And The Firewall Before Began Updates?

I've just installed Fedora 12 (32 bit) KDE on my test system and have a couple of issues.I haven't played with Fedora for a couple of years, so I'm not very familiar with it. I haven't had the problems with Kubuntu, OpenSUSE nor Mandriva, so I'm a bit in the dark here. I'll see if someone can help me with my sound issue, before moving on to the next problem. I've read seveal posts about sound issues, but not sure exactly if any are the same as I'm having.

After installing Fedora 12, sound was all working fine. I think installed all the available updates, which is when the problem began. Basically, I have sound in Hulu, Firefox videos such as CNN, etc. But, I have no sound at startup or shutdown....system sounds, I suppose I should say. I have disabled SELinux and the firewall, before I began updates. Looking in KInfoCenter under Audio, I see:

Audio Devices: NOT ENABLED IN CONF VIA8247 with ALC655 at 0xc400 IRQ11 In System Settings>Multimedia I see Internal Audio Analog Stereo as the only device shown. I have unchecked Mute and have all volume controls up all the way in KMix, which shows HDA Nvidia on the tab.