Windows vim shelling out waits forever

I'm currently unable to complete a shell out from the 64-bit Windows version of gvim. Doesn't matter how I launch vim. Also doesn't matter which shell I use. Tried cmd.exe and cygwin's bash.exe. Behavior is identical:

Opens a command window as "C:\Program Files\vim\vim72\wimrun.exe"
Shows something like this:
c:\cygwin\bin\bash.exe --rcfile c:/cygwin/home/paule/.bashex -i -c "sort"
Then just waits forever.

Any idea what's going on or even how to troubleshoot this?

Thanks,

Paul

--
--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php

---
You received this message because you are subscribed to the Google Groups "vim_use" group.
To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.