dpkg return "directory not empty so not removed" -- now what?

["H. S." <greatexcalibur@yahoo.com>]

When dpkg return that a particular directory was not empty and so was 
removed, but is to be done with that offending directory? As an example, 
what should I do in this case:

The following packages will be REMOVED:
  mozilla-tabextensions*
The following NEW packages will be installed:
  mozilla-xft
0 upgraded, 1 newly installed, 1 to remove and 1 not upgraded.
Need to get 199kB of archives.
After unpacking 198kB of additional disk space will be used.
Do you want to continue? [Y/n]
Get:1 ftp://ftp3.nrc.ca testing/main mozilla-xft 2:1.6-5 [199kB]
Fetched 199kB in 1s (127kB/s)
(Reading database ... 152154 files and directories currently installed.)
Removing mozilla-tabextensions ...
Updating mozilla chrome registry...done.
Purging configuration files for mozilla-tabextensions ...
dpkg - warning: while removing mozilla-tabextensions, directory 
`/usr/lib/mozilla-firefox' not empty so not removed.
dpkg - warning: while removing mozilla-tabextensions, directory 
`/etc/mozilla-extensions' not empty so not removed.
(Reading database ... 152130 files and directories currently installed.)
Unpacking mozilla-xft (from .../mozilla-xft_2%3a1.6-5_i386.deb) ...
Adding `diversion of /usr/lib/mozilla/components/libgfx_gtk.so to 
/usr/lib/mozilla/components/libgfx_gtk.so.pure by mozilla-xft'
Setting up mozilla-xft (1.6-5) ...
Updating mozilla chrome registry...done.

Do you want to erase any previously downloaded .deb files? [Y/n]
Press enter to continue.

running dpkg --pending --configure ...
running dpkg --pending --remove ...



Thanks,
->HS

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