Audio problem after an regular update in fedora 11

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http://forums.fedoraforum.org – my mother board is Intel 945 , when i was using fedor10 there was no problem in audio, after the upgrading to fedora 11 there was no problem, as i regularly update my system, after an update there is sound problem , i can here very very little sound that to if volume is max need some help, any on explain the problem (HowTos)