./gnome_upgrade.sh error

[Vitaly]

gmake[3]: Leaving directory 
`/usr/war/samba/public/tmp/tmp/PolicyKit-0.7/polkitd'
gmake[2]: Leaving directory 
`/usr/war/samba/public/tmp/tmp/PolicyKit-0.7/polkitd'
Making all in doc
gmake[2]: Entering directory 
`/usr/war/samba/public/tmp/tmp/PolicyKit-0.7/doc'
Making all in man
gmake[3]: Entering directory 
`/usr/war/samba/public/tmp/tmp/PolicyKit-0.7/doc/man'
/usr/local/bin/xsltproc -nonet 
http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl 
polkit-auth.xml
I/O error : Attempt to load network entity 
http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
warning: failed to load external entity 
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"
cannot parse 
http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
gmake[3]: *** [polkit-auth.1] Ошибка 4
gmake[3]: Leaving directory 
`/usr/war/samba/public/tmp/tmp/PolicyKit-0.7/doc/man'
gmake[2]: *** [all-recursive] Ошибка 1
gmake[2]: Leaving directory 
`/usr/war/samba/public/tmp/tmp/PolicyKit-0.7/doc'
gmake[1]: *** [all-recursive] Ошибка 1
gmake[1]: Leaving directory `/usr/war/samba/public/tmp/tmp/PolicyKit-0.7'
gmake: *** [all] Ошибка 2
*** Error code 2

Stop in /usr/ports/sysutils/policykit.
** Command failed [exit code 1]: /usr/bin/script -qa 
/tmp/portinstall.31806.0 env make BATCH=yes GNOME_UPGRADE_SH_VER=2.12-4 
DISABLE_VULNERABILITIES=1 FETCH_BEFORE_ARGS=-q
** Fix the problem and try again.
** Listing the failed packages (-:ignored / *:skipped / !:failed)
         ! sysutils/policykit    (unknown build error)
INFO: GNOME upgrade FAILED at пятница, 28 марта 2008 г. 16:18:03 (EET)