I'm not familiar with those commands, but here is what they produce:
(Please excuse the formatting.)
lwp-request -m get -USsexd http://mail-scanning/cgi-bin/temp.cgi
skx@gold:~$ lwp-request -m get -USsexd http://mail-scanning/cgi-bin/te
+mp.cgi
LWP::UserAgent::new: ()
LWP::UserAgent::request: ()
LWP::UserAgent::send_request: GET http://mail-scanning/cgi-bin/temp.cg
+i
LWP::UserAgent::_need_proxy: Not proxied
LWP::Protocol::http::request: ()
LWP::Protocol::collect: read 8 bytes
LWP::Protocol::collect: read 387 bytes
LWP::UserAgent::request: Simple response: OK
GET http://mail-scanning/cgi-bin/temp.cgi
User-Agent: lwp-request/5.810
GET http://mail-scanning/cgi-bin/temp.cgi --> 200 OK
Connection: close
Date: Thu, 14 Aug 2008 21:15:16 GMT
Location: http://example.com/
Server: Apache/2.2.9 (Debian) PHP/5.2.6-2+b1 with Suhosin-Patch mod_ss
+l/2.2.9 OpenSSL/0.9.8g mod_musicindex/1.2.2 mod_perl/2.0.4 Perl/v5.10
+.0
Content-Type: text/plain
Client-Date: Thu, 14 Aug 2008 21:15:16 GMT
Client-Peer: 192.168.1.10:80
Client-Response-Num: 1
Client-Transfer-Encoding: chunked
The second lwp-request -m get -USsex http://mail-scanning/cgi-bin/temp.cgi
LWP::UserAgent::new: ()
LWP::UserAgent::request: ()
LWP::UserAgent::send_request: GET http://mail-scanning/cgi-bin/temp.cg
+i
LWP::UserAgent::_need_proxy: Not proxied
LWP::Protocol::http::request: ()
LWP::Protocol::collect: read 8 bytes
LWP::Protocol::collect: read 387 bytes
LWP::UserAgent::request: Simple response: OK
GET http://mail-scanning/cgi-bin/temp.cgi
User-Agent: lwp-request/5.810
GET http://mail-scanning/cgi-bin/temp.cgi --> 200 OK
Connection: close
Date: Thu, 14 Aug 2008 21:16:29 GMT
Location: http://example.com/
Server: Apache/2.2.9 (Debian) PHP/5.2.6-2+b1 with Suhosin-Patch mod_ss
+l/2.2.9 OpenSSL/0.9.8g mod_musicindex/1.2.2 mod_perl/2.0.4 Perl/v5.10
+.0
Content-Type: text/plain
Client-Date: Thu, 14 Aug 2008 21:16:29 GMT
Client-Peer: 192.168.1.10:80
Client-Response-Num: 1
Client-Transfer-Encoding: chunked
redirect<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>200 OK</title>
</head><body>
<h1>OK</h1>
<p>The document has moved <a href="http://example.com/">here</a>.</p>
<hr>
<address>Apache/2.2.9 (Debian) PHP/5.2.6-2+b1 with Suhosin-Patch mod_s
+sl/2.2.9 OpenSSL/0.9.8g mod_musicindex/1.2.2 mod_perl/2.0.4 Perl/v5.1
+0.0 Server at mail-scanning Port 80</address>
</body></html>