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(at)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