OS X Server: Apache: perl CGI will not kinit

[Duncan S Kincaid]

I've a keytab for OS X Server 10.4.11 running Apache 1.x.
My perl CGI script runs perfectly from a user shell (specifically,  
credentials are returned following the script's kinit).
However when run from Apache as www, the following is returned:

 >>
> kinit: Error getting initial tickets: Credentials cache server  
> unavailable
 >>

here is the line of code which attempts the kinit:
my @test = `/usr/bin/kinit daemon/dusp.mit.edu\@ATHENA.MIT.EDU 2>&1`;

would anyone know how i might fix this problem?

many thanks,
Duncan Kincaid
MIT Urban Studies and Planning