mod_perl And Redirection

[Rasoul Hajikhani]

Hello there,

My apologies if you already have received this email, but I keep getting 
a message that the mail was not sent.

We have just upgraded to :

Apache/1.3.27 Ben-SSL/1.48 (Unix) PHP/4.2.3 mod_perl/1.27 configured

Running perl 5.6.1.

I am getting 302 error message on my redirects. This comes as a complete 
 surprise since the same piece of code works just fine on:

Apache/1.3.14 Ben-SSL/1.42 (Unix) PHP/4.0.3pl1 mod_perl/1.24_01 configured

Here is my code:

$r->headers_in->unset("Content-length");
        $r->header_out(Location => "$uri");
        $r->status(REDIRECT);
        $r->send_http_header;
        return REDIRECT;
I am not sure where to begin debugging. I first wanted to check w/ you 
guys to see if there are any quick fixes.
I appreciate any feed back.
-r