The allegation is that setup is keeping open handles around...

[Christopher Faylor]

...is it true?  It seems like there are some valid concerns about
problems with setup.exe in the cygwin mailing list and no one is
addressing them.

Setup.exe is too important a piece of the cygwin release for it to
go unsupported.  Please, someone (Max?) respond to and, if possible,
investigate claims of problems.

cgf