Rear Suspension Noise, Help

[LRGreger@aol.com]

I've recently noticed what has developed into a rather severe noise someplace 
in the rear suspension when going over relatively small but abrupt changes in 
the road surface.  I never get any significant noise from the front 
suspension, but seem to get the noise on both sides of the rear suspension.  
I have 205/45R16 tires which exacerbate the suspension noise somewhat, but 
something has definitely deteriorated.  It's been close to 100K mi since I 
replaced the rear shocks, but they still pass the bounce test.  I rather 
suspect that this noise situation has been a gradual rather than abrupt 
situation, but I can't swear to it.

Does anyone have any ideas, hopefully not expensive ones?