[Inkscape-user] Why my Gradient always Duplicates ?

Hello there,

I have this strange problem, when I copy(or Duplicate) an object and change the second one's gradient, the first object gradient also changes.I am using Inkscape 0.45.

I don't know what am I doing wrong, because of this problem,currently I am creating every object from scratch each time.

Kindly help me, Kishore.