ps command (process status) does not return anything anymore

[Antha Lamus]

Hi all,
I recently installed a newer version of bash and now the "ps" command
does not issue anything anymore (return code is 128). in fact, even
the options seem different as I don't see "-W" in the man anymore.
also, I can pretty much issue anything I want after the ps, like "ps
-dfiaodsfpaidfjasdfaf" and it will simply return nothing ($?=128
still). I've tried to search through the archives but i guess "ps" is
a bit to common!
anybody has any idea what could have gone wrong? any place where I
could check logs?
Thanks,
Anthony

PS: more info:
$ which ps
/usr/bin/ps
$ man ps
PS(1)                               CYGWIN                               PS(1)

NAME
        - Report process status

SYNOPSIS
       ps [-aefls] [-u UID]

OPTIONS
       -a, --all
              show processes of all users

       -e, --everyone
              show processes of all users

       -f, --full
              show process uids, ppids

       -h, --help
              output usage information and exit

       -l, --long
              show process uids, ppids, pgids, winpids

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