Sound sometimes doesn't work, sometimes does

I don't know if my problem is to do with Leopard, but it only started once I began using it.
Sound periodically disappears from all applications. I can get sound to come back usually by rebooting, although I just rebooted now to no avail.
I would like to hear any suggestions for a permanent fix, I don't necessarily want to reboot every time sound is missing.

got that keystroke wrong
found the discussion that helped me... thanks Guo!
New! Re: Mac Sound Problem
Posted: Jul 4, 2008 9:43 PM in response to: mpiol
Helpful
Reply Email
Reset the PRAM. Turn off the computer. Restart it again after 10 seconds. Press and hold optioncommand+RP when the Superdrive makes the sound. You'll hear the chime sound twice. Release the button after you hear the second sound. The computer will start normally. See if it solved your issue.

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