PostgreSQL and Windows2000 and defunct processes

Problem:

Win2000 and Cygwin/postgresql-7.1 produce
"defunct" processes after each run which can ONLY be killed
by Win Task Manager. If you allow too many "defunct" processes
your database requests slow down and your number of connections
increases, i.e. if you
have 32 connections specified in your postgresql.conf file and
and 32 "defunct" processes and try to run again
the connection will be refused.
When you are killing "defunct" processes and reach the one which was
first formed
the postmaster restarts postgresql.

How to get read of those "defunct" processes?

Much obliged.

Steven.

P.S. You do not have these "defunct" processes under Win98!!!???