Apple Logic Pro /LogicExpress Discussion

Until I got my Intel Mac, I had no problems with audio.  Now,  
everything is haywire and I don't know what the cause is.  The sound  
keeps cutting off without warning and there is much crackling, popping  
and cutting out which I see reflected in the analog activity lights of  
the MOTU.  I thought for a while that it was a problem with the 828  
until I noticed that when I used Quicktime or iTunes --- no problems.

Then I started getting a Audio Driver Error 25974 --- I don't know  
what that means, either, but after searching it seemed that starting  
the core audio separately from Logic might help.

I only have Logic 8, Ivory, MOTU ethno and symphonic and Spectrasonics  
RMX.  Do I need DAE or TDM?

Any suggestions on solving my audio that is cutting out every time I  
turn around.  I almost bought another audio interface until I realized  
there is probably nothing wrong with the one I have.

Let me know ---I've been going through this for weeks and I'm  
desperate.  I've even considered doing the 1on1 thing and hanging out  
with one of the Mac Geniuses --- but I don't know if I want to gamble  
their fee vs their knowledge of peripherals.

Regards,



T