[s-cars] Driveshaft Shudder & Squeal

[keithbedard at verizon.net]

I recently found an old post, which is EXACTLY the same two problems I have with my 1995.5 S6:
1.  shudder, or vibration, mostly noticeable on early take off in first or second. 
2.  a squeal that  sounds like fan against radiator while decelerating under load. 

The post from 2004 is here:
http://coimbra.ans.net/pipermail/s-car-list/2004-January/024473.html

Tomorrow (Saturday), I will only have a couple of hours to try to diagnose the culprit.  Any ideas?  Hopefully Rich “Guzz” if you read this message, would be great to hear what the problem was
  Dried-out driveshaft front CV joint?  How do I diagnose if the driveshaft CV are bad?  I don’t think it is the driveshaft bearing, and exhaust does not appear to be touching driveshaft.

Any experience, thoughts, or ideas would be greatly appreciated.

Thank you,
Keith Bedard