http://bugs.winehq.org/show_bug.cgi?id=21206
--- Comment #2 from Dan Kegel dank@kegel.com 2010-01-09 19:58:31 --- Interestingly, when you run cygwin.bat and it spews that infinite series of warnings, at some point it starts listening for commands on the commandline like it should. Typing exit causes the shell to exit, and typing cat successfully runs cat, echoing your input without any warnings.
That said, there is an installation failure: I was unable to install gvim, it kept crapping out with various warnings about files in use.