postmaster -i & establishes three connections why?

Hi,
I've just upgraded my cygwin to 1.3.20-1 and postgresql to 7.3.2
And I found that when run
postmaster -i &
There are three connections being established and why is that?
Administrator@DemoServer ~
$ LOG:  database system was shut down at 2003-02-13 17:33:26 EST
LOG:  checkpoint record is at 0/841330
LOG:  redo record is at 0/841330; undo record is at 0/0; shutdown TRUE
LOG:  next transaction id: 484; next oid: 16976
LOG:  database system is ready
$ ps -l     PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND    2292       1    2292       2292  con  500
17:43:20/usr/bin/bash    2320    2292    2292       2324  con  500 17:43:22
 
/usr/local/bin/ipc-daemo
n    2092    2292    2292       2404  con  500 17:43:22
/c/progra~1/apache~1/apa
che/cgi-bin/printspool    2312    2292    2292       2452  con  500 17:43:24
/usr/bin/postgres    2048    2312    2292       2048  con  500 17:43:28
/usr/bin/postgres    1884    2048    2292       1884  con  500 17:43:28
/usr/bin/postgres    2504    2292    2504       1960  con  500 17:43:36 /usr/bin