Errors when CPAN installing SpamAssassin

[David List <david@davidlist.dk>]

Could anyone explain the errors, I get, when trying to install
SpamAssassin 2.60 on a Debian stable system through CPAN?

Here is a small excerpt:

Subroutine WEIRD_PORT_uri_test redefined at
/etc/spamassassin/20_uri_tests.cf, rule WEIRD_PORT, line 8.
Subroutine FREEWEBCO_NET_URL_uri_test redefined at
/etc/spamassassin/20_uri_tests.cf, rule FREEWEBCO_NET_URL, line 8.
Subroutine CLICKSFORMONEY_NET_uri_test redefined at
/etc/spamassassin/20_uri_tests.cf, rule CLICKSFORMONEY_NET, line 8.
Subroutine HTTP_CTRL_CHARS_HOST_uri_test redefined at
/etc/spamassassin/20_uri_tests.cf, rule HTTP_CTRL_CHARS_HOST, line 8.
Subroutine BIZ_TLD_uri_test redefined at ../rules/20_uri_tests.cf, rule
BIZ_TLD, line 8.

Best regards,
David List