Thanks a lot Sir, that hint given today, was crucial.,,
After I followed the 22 steps in this page below:-
kicad-doc - KiCad new documentation format repository)
& after I downloaded the footprint libraries in my local E: drive,..
now my "cvpcb" takes only 2 seconds to load the net-list in the same schematic.
Also, I tried in the bigger schematic, & it took only 6 seconds...!!!......WoW.....!!!
Since I started using KiCad, this problem had plagued me, - the net-list always took 3 to 5 minutes to load, and at times it took so long that I had to shut down KiCad.
Today is the FIRST time, that the "net-list" was generated in less than 10 seconds...!!
@bobc -thanks for posting these 22-steps...problem solved..!!.....