The following is an email sent to me from Robert Noland:

--- QUOTE ---
Hi,

It seems that Qt4 is installing things to /usr/local/lib/plugins, which
ntop is trying to remove in it's post-install target.  This is causing
installation of ntop to fail.

# $FreeBSD: ports/net/ntop/Makefile,v 1.59 2007/02/10 06:05:03 kris Exp
$
#

PORTNAME=       ntop
PORTVERSION=    3.2
PORTREVISION=   4

...

post-install:
        @${MKDIR} ${DBDIR}/ntop
        @${CHOWN} -R nobody:nobody ${DBDIR}/ntop
        @${RMDIR} ${PREFIX}/lib/plugins

rnoland-ibm% ls -l                                                    
total 8184
drwxr-xr-x  2 root  wheel      512 Apr 26 17:05 accessible
drwxr-xr-x  2 root  wheel      512 Apr 26 18:29 iconengines
drwxr-xr-x  2 root  wheel      512 Apr 26 18:27 imageformats
drwxr-xr-x  2 root  wheel      512 Apr 26 18:33 inputmethods
-rwxr-xr-x  1 root  wheel   256951 Apr 26 17:45 libqt3supportwidgets.so
-rw-r--r--  1 root  wheel  8075392 Apr 26 17:45
libqt3supportwidgets.so.debug

rnoland-ibm% pkg_info -W `pwd`/libqt3supportwidgets.so                
/usr/local/lib/plugins/libqt3supportwidgets.so was installed by package
qt4-designer-4.2.3_1
rnoland-ibm% pkg_info -W /usr/local/lib/plugins/iconengines/libqsvg.so
/usr/local/lib/plugins/iconengines/libqsvg.so was installed by package
qt4-iconengines-4.2.3

robert.
--- END QUOTE ---

The attached patch fixes this problem.  It adds files/patch-Makefile.in
which removes the unnecessary line, removes the erroneous post-install
line and bumps PORTREVISION.  I believe bumping PORTREVISION is the
right thing, but please correct me if I am wrong.

How-To-Repeat: N/A