lost sound after update

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http://forums.fedoraforum.org – i recently did a fresh install of fedora 17 and everything was working great.. i updated everything with yum update. there was a kernel update and after that i lost sound, ive tried booting the older kernel in grub but that did not work. and i dont remember if the sound card its picking up is the same one that worked. its trying to play thru HDMI which it shouldnt be. any ideas on what it could be? (HowTos)