In terminal, I enter this command: sudo apt-get remove network-manager-kde sudo reboot sudo apt-get install wicd And get this message: Reading package lists... Done Building dependency tree Reading state information... Done Package network-manager-kde is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up flashplugin-downloader:i386 (220.127.116.11ubuntu1) ... Downloading... --2012-02-07 22:53:55-- http://archive.canonical.com/pool/p...ugin/adobe-flashplugin_18.104.22.168.orig.tar.gz Resolving archive.canonical.com... 22.214.171.124 Connecting to archive.canonical.com|126.96.36.199|:80... connected. HTTP request sent, awaiting response... 404 Not Found 2012-02-07 22:53:55 ERROR 404: Not Found. download failed The Flash plugin is NOT installed. dpkg: error processing flashplugin-downloader:i386 (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of flashplugin-installer: flashplugin-installer depends on flashplugin-downloader (>= 188.8.131.52ubuntu1); however: Package flashplugin-downloader is not installed. Package flashplugin-downloader:i386 is not configured yet. dpkg: error processing flashplugin-installer (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: flashplugin-downloader:i386 flashplugin-installer E: Sub-process /usr/bin/dpkg returned an error code (1) Can someone help please?