IpcSemaphoreCreate Error,help pls

env:
win2003 adv server
CYGWIN_NT-5.2  1.3.22(0.78/3/2) i686 (include postgresql 7.3.4-1)
cygipc-daemon1.03

cygipc start success



$ipctest s
Test v0.02
semaphore 0 created

$ initdb -D /opt/pgsql/data
The files belonging to this database system will be owned by user "sharesun".
This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory /opt/pgsql/data... ok
creating directory /opt/pgsql/data/base... ok
creating directory /opt/pgsql/data/global... ok
creating directory /opt/pgsql/data/pg_xlog... ok
creating directory /opt/pgsql/data/pg_clog... ok
creating template1 database in /opt/pgsql/data/base/1... IpcSemaphoreCreate: sem
get(key=1, num=17, 03600) failed: Function not implemented

initdb failed.