I have tried to compile an X11 program from the Guile tutorial http://www.gnu.org/software/guile/docs/guile-tut/tortoise1.html. I could compile it but when I run it from bash, I get a core dump.
On the Linux system I use for my work, the program runs flawlessly. I cannot tell if this is because the program is badly written (that is not well-behaved) or because there is a bug Cygwin / X11 somewhere. I shall not need X11 (as far as I can tell now) on Windows, but I thought this may be interesting for Cygwin community. (By the way: Cygwin seems to be a phantastic product, now that learnt a few things with a lot of help from this mailing list.) -- Janos Blazi