[Ubuntu] qgis warnings and failure after upgrading to 1.7.2 and 1.7.3

[Donovan Cameron]

*I recently upgraded QGIS from the ubuntugis-unstable repository and it
seems to not be working correctly anymore. That seems like a pun...*
*
*
*LTS 10.04 (Lucid Lynx): QGIS 1.7.3 (fresh install of ubuntu)*
*11.04 (Natty Narwhal): QGIS 1.7.2*

*I get the following errors:*
*Warning: loading of qgis translation failed
[/usr/share/qgis/i18n//qgis_en_CA]*
*Warning: loading of qt translation failed
[/usr/share/qt4/translations/qt_en_CA]*
***Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already
tracking action "Project Properties..." under id 104 *
*****Warning: void DBusMenuExporterPrivate::addAction(QAction*, int):
Already tracking action "Options..." under id 108 *
***Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already
tracking action "Snapping Options..." under id 109 *
***Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already
tracking action "Configure shortcuts..." under id 107 *
***Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already
tracking action "Style manager..." under id 106 *
***Warning: void DBusMenuExporterPrivate::addAction(QAction*, int): Already
tracking action "Custom CRS..." under id 105 *
*Warning: Couldn't load Python support library: Cannot load library
/lib/qgispython: (/lib/libqgispython.so: cannot open shared object file: No
such file or directory)*
*The warnings with the ** are only seen on the natty machine running qgis
1.7.2.*

*When I try to click "Settings > Options..." QGIS fails unexpectedly with
the following*:
*Fatal: ASSERT: "myResult == 0" in file
/build/buildd/qgis-1.7.2/src/app/qgsoptions.cpp, line 824*
*Aborted*
*
*
*I have a slow internet connection with limited bandwidth so I want to
avoid re-downloading anything. I already spent the better half of the day
upgrading. So of course, any suggestions are more than welcome.*
*
*
*I also noticed that the option to "Fetch Python Plugins" is gone as well!*
*
*
*Is it possible to uninstall QGIS but leave its package files so I can
simply re-install from the cached packages on disk - found in
/var/cache/apt/archives?*
*
*
*Would the following example work?:*
*sudo apt-get purge qgis**
*sudo apt-get install qgis* python-qgis**


*PS: Is there an effective way to search the archived mailing list to see
if this is already answered out there?*
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