Headphone static with 10.7.5 upgrade

Ever since the 10.7.5 update I've been having so many audio problems. I have to unplug and replug my USB cables upon waking the machine from sleep. But now I've noticed if you use a headphone jack...there is static through the headphones. I just updated the 10.7.5 supplemental update (issued 10/4/12) and it seems to have solved nothing. Anyone have any advice?

Reset the SMC > Resetting the System Management Controller (SMC)
1. Shut down the computer.
2. Unplug the computer's power cord.
3. Wait fifteen seconds.
4. Attach the computer's power cord.
5. Wait five seconds, then press the power button to turn on the computer.
Then the PRAM >  About NVRAM and PRAM
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.

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