jfb@jfb-ubuntu:~$ sudo apt-get install python-wxgtk2.8 python-wxtools wx2.8-i18nReading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libwxbase2.8-0 libwxgtk2.8-0 Suggested packages: wx2.8-doc python-xml The following NEW packages will be installed: wx2.8-i18n The following packages will be upgraded: libwxbase2.8-0 libwxgtk2.8-0 python-wxgtk2.8 python-wxtools 4 upgraded, 1 newly installed, 0 to remove and 6 not upgraded. Need to get 12.1MB of archives. After this operation, 12.7MB disk space will be freed. Do you want to continue [Y/n]? Y WARNING: The following packages cannot be authenticated! libwxbase2.8-0 libwxgtk2.8-0 python-wxgtk2.8 python-wxtools wx2.8-i18n Install these packages without verification [y/N]? y Get:1 http://apt.wxwidgets.org/ lucid-wx/main libwxbase2.8-0 2.8.11.0-0 [626kB] Get:2 http://apt.wxwidgets.org/ lucid-wx/main libwxgtk2.8-0 2.8.11.0-0 [3,456kB] Get:3 http://apt.wxwidgets.org/ lucid-wx/main python-wxgtk2.8 2.8.11.0-0 [7,195kB] Get:4 http://apt.wxwidgets.org/ lucid-wx/main python-wxtools 2.8.11.0-0 [56.3kB] Get:5 http://apt.wxwidgets.org/ lucid-wx/main wx2.8-i18n 2.8.11.0-0 [787kB] Fetched 12.1MB in 8s (1,463kB/s) (Reading database ... 172661 files and directories currently installed.) Preparing to replace libwxbase2.8-0 2.8.10.1-0ubuntu1 (using .../libwxbase2.8-0_2.8.11.0-0_i386.deb) ... Unpacking replacement libwxbase2.8-0 ... Preparing to replace libwxgtk2.8-0 2.8.10.1-0ubuntu1 (using .../libwxgtk2.8-0_2.8.11.0-0_i386.deb) ... Unpacking replacement libwxgtk2.8-0 ... Preparing to replace python-wxgtk2.8 2.8.10.1-0ubuntu1 (using .../python-wxgtk2.8_2.8.11.0-0_i386.deb) ... Unpacking replacement python-wxgtk2.8 ... dpkg: error processing /var/cache/apt/archives/python-wxgtk2.8_2.8.11.0-0_i386.deb (--unpack): trying to overwrite '/usr/share/pyshared/wx-2.8-gtk2-unicode/wxversion.py', which is also in package python-wxversion 0:2.8.10.1-0ubuntu1 update-alternatives: using /usr/lib/wx/python/wx2.8.pth to provide /usr/lib/python2.5/site-packages/wx.pth (wx2.5.pth) in auto mode. update-alternatives: using /usr/lib/wx/python/wx2.8.pth to provide /usr/lib/python2.6/dist-packages/wx.pth (wx2.6.pth) in auto mode. Preparing to replace python-wxtools 2.8.10.1-0ubuntu1 (using .../python-wxtools_2.8.11.0-0_all.deb) ... Unpacking replacement python-wxtools ... Selecting previously deselected package wx2.8-i18n. Unpacking wx2.8-i18n (from .../wx2.8-i18n_2.8.11.0-0_all.deb) ... Processing triggers for python-central ... Processing triggers for man-db ... Processing triggers for python-gmenu ... Rebuilding /usr/share/applications/desktop.en_US.utf8.cache... Processing triggers for desktop-file-utils ... Processing triggers for python-support ... Errors were encountered while processing: /var/cache/apt/archives/python-wxgtk2.8_2.8.11.0-0_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) jfb@jfb-ubuntu:~$