Logic 7 audio playing high pitched noise

Hi Discussion Group.
I am having some major difficulties with LP7.0.1 (downgraded frrom 7.2.2 and was working fine with 7.2.2) and the motu 828 mkII that just crept up on his system today.
An audible high pitched noise when playing logic after initially starting 10 seconds after first play. Also after stopping playback the high pitched sound lingers.
Logic complains of sync problems between audio and MIDI.
All music is heard fine with iTunes. there is no other audio software playing at the time of logic playback.
Nothing has changed on his system to create this. before today everything was working fine. We removed everything from the firewire bus and only the MOTU is present.
playing logic fine out the built-in audio just fine.
Changing the clock mode to autosync does not help and iTunes stops working. internal works fine. Also setting the I/O buffer size to 32, 64, 128, 256, and 512 and relaunching the driver each time did not help.
no MIDI card
Here are screen shots of his MOTU control panel and Logic Audio Drivers preferences
http://www.enabled.com/~noah/MOTU/
Any clues on what else to try? I am at a loss here.
cheers,
Noah

I've heard of weird things like this happening to 828's before.
There is a reset procedure, either in the manual or on the Motu website - try running that and seeing whether it fixes it.

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