Mac Mini sound output and superdrive stop working randomly

Every once in a while the sound stops working and when I check the sound preferences it says no output devices are connected, even when I've got stuff plugged in. Doesn't recognize the built in speaker either. This has been happening for a while, but the most recent time I had tried to read a DVD and it wouldn't show up, and wouldn't come out of the drive when I hit the eject key. System Profiler wasn't recognizing the drive either. I fixed all this by shutting down and disconnecting all the cords from the back, as has worked for the sound problems before, but this doesn't seem to fix it permanantly. The sound problems seem to have started when I installed a security update a week or 2 ago, not sure about the superdrive problems. Anybody got any ideas?

I am having this same problem. It just started this morning (August 19th). No sound was coming out and the headphone jack in the back was lit up red. When I plugged the headphones in, sound came out of there. I unplugged them and sound came out of the computer as usual...but only for a minute or so, then the same problem. Nothing works in changing preferences either. Has anyone had any luck with this problem?

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