The default "Useragent" for LWP is "libwww-perl/#.##".

It is quite possible that the cgi query you are attempting to "get" sends different responses based on what it thinks the user agent is.

Read the docs on "$ua = LWP::UserAgent->new( %options )" to see how you can specify the agent.

Another (far-fetched, remote) possibility is that the form is generated dynamically by javascript. Since your LWP will not normally execute javascript - you see no form.

TO see the differences in interaction between a regular browser and your LWP, you will probably need a network sniffer, like Wireshark.