IpcSemaphoneInitialize ... Invalid Argument (Solved)

I noticed back in the archives around June that somebody was having a
problem which I encountered running 7.3.4 on Cygwin, Win2K. I fixed it, so
I thought I'd post the solution to the list, since I didn't notice it
having been posted. Forgive me if it's already been solved before. :-)

The postmaster service fails to start, and the error message in
/var/log/postmaster.log is:

IpcSemaphoreInitialize: semctl(id=2, 0, SETVAL, 0) failed: Invalid argument
LOG: startup process (pid 2532) exited with exit code 1
LOG: aborting startup due to startup process failure

What apparently happened is that the Win2K SCM had the wrong password for
the "./postgres" user.

More specifically, the incantation that I went through which seemed to fix it:

1) Changed postmaster to log on as Local System, and attempt to start it.
(Failed to start.)
2) Change postmaster back to logging on as "postgres", and re-type in the
password for "postgres" in the provided box.
3) Start postmaster using "net start postmaster" in Cygwin.

-Max