[ODE] Problem with Hanging Objects under gravity

[achaudhry]

Hi,

I am trying to model a situation where I am hanging a rope from a high
structure. As suggested in the forum, I used both sphere and small boxes (in
seperate trials) to model the rope. I am using fixed joints between the small
objects to form the rope and using a fixed joint to connect it to the high
struture from where i want to hang it. 

This model is not succesfull as within a short span of time, due to gravity ,
the ropes start swinging, and fnally become unstable. 

Please suggest me on where am i making a mistake. 
Thanking you, 
Amber