POST using libwww 5.1b

I'm having problem implementing form posting using libwww 5.1b.
It's the same error when I was using w3c to post.

w3c -post http://ella.cs.ucsb.edu:8000/cgi-bin/pe2 -form name=xun
Looking up ella.cs.ucsb.edu
Contacting ella.cs.ucsb.edu
Writing...
Writing...

(wait there forever)

Someone please tell me what's happening.

thanks
xun