I've removed all access to the mingw group files except for user id mingw.
If you need to access the shell group files then please send me your public
identity file; one of identity.pub, id_dsa.pub or id_rsa.pub. The one you
give me should match the one you have given SF for CVS access.
I have taken this action in support of an idea I've given to SF as a RFE.
The method I've chosen will allow any party with access to the mingw
account access to the cron jobs as well as maintaining ownership of all
files in the group file system. It provides SF an advantage in that fewer
user ids in the shell server would need to be maintained, fewer cron users,
less file system space, fewer request tickets, etc.