No sound since 10.4.9 update- locked in optic digital output?

Hi
My computer seems to be locked in digital out. The built-in speakers don't even appear as an option, and there's the red glow coming out of the headphone jack. Am i doing something wrong? This happened just after the 10.4.9 update.
mikel

This is a known issue, and people have been dealing with this since the first MBPs came out last January, its not a 10.4.9 issue. Try plugging and unplugging something in the audio jack a few times to see if it will turn off.

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