CGI requires content-length
I've noticed that various Rebol CGI website scripts hang. Apparently, HTTP POST on newer servers (or clients actually) keeps the socket open in such a way that the standard read-cgi function hangs.
The fix I use in newer scripts is to use the CGI content-length field to terminate the read.
If you have insights into this problem, please comment. I'd like to fix read-cgi in the next release.