in reply to I think Liz is right
in thread LWP::UserAgent Wrongly Uses HTTP/1.1

And if you give it a higher version:
GET / HTTP/1.2 HTTP/1.1 200 OK Date: Thu, 20 Nov 2003 10:13:20 GMT
it still gives you back what the server is capable of doing. Mind you, in this case, the connection was kept alive (because it was handled as an 1.1 request, I would assume). This doesn't happen if I specify 1.0 in the request.

Liz