Apache 2/ Mod_perl 2/ RT 3.0.7 problem

Hello,

I have a problem with the login in RT 3.0.7. When I submit user and password both go to URL. Show the password in the URL, what's  not secure!
The form method is GET because with POST doesn't work! What I do? Some Suggestion?!
My configurattion:
	Fedora Core 1
	Apache 2.48
	Mod_perl 1.99
	Perl 5.8
	MySQL 3.23

Thanks,
Tallitha Campos