When I restarted the computer I found no network icon. I tried to access internet but no connection was found. I also didn't have the Bluetooth, sound, battery, and power icon. Its really crazy that I have to use these commands to display them:bluetooth-appletnm-applet --sm-disablegnome-power-managerEvery time I start the system I face this trouble! How can I fix it? Is there anyway to restore previous configuration?the history logStart-Date: 2011-03-16  11:35:58Install: hijra-applet:amd64 (0.1.18-3), python-hijra:amd64 (0.1.18-3, automatic), python-eggtrayicon:amd64 (2.25.3-5ubuntu2, automatic)End-Date: 2011-03-16  11:36:15Start-Date: 2011-03-16  19:12:49Upgrade: libkrb5-3:amd64 (1.8.1+dfsg-5ubuntu0.4, 1.8.1+dfsg-5ubuntu0.6), libk5crypto3:amd64 (1.8.1+dfsg-5ubuntu0.4, 1.8.1+dfsg-5ubuntu0.6), chromium-browser:amd64 (10.0.648.127~r76697-0ubuntu0.10.10.1, 10.0.648.133~r77742-0ubuntu0.10.10.1), chromium-browser-l10n:amd64 (10.0.648.127~r76697-0ubuntu0.10.10.1, 10.0.648.133~r77742-0ubuntu0.10.10.1), chromium-codecs-ffmpeg:amd64 (10.0.648.127~r76697-0ubuntu0.10.10.1, 10.0.648.133~r77742-0ubuntu0.10.10.1), libkrb5support0:amd64 (1.8.1+dfsg-5ubuntu0.4, 1.8.1+dfsg-5ubuntu0.6), libtiff4:amd64 (3.9.4-2ubuntu0.1, 3.9.4-2ubuntu0.2), chromium-browser-inspector:amd64 (10.0.648.127~r76697-0ubuntu0.10.10.1, 10.0.648.133~r77742-0ubuntu0.10.10.1), libgssapi-krb5-2:amd64 (1.8.1+dfsg-5ubuntu0.4, 1.8.1+dfsg-5ubuntu0.6)End-Date: 2011-03-16  19:13:11Start-Date: 2011-03-16  20:52:52Install: gpredict:amd64 (1.1-7)End-Date: 2011-03-16  20:53:03Start-Date: 2011-03-16  20:55:55Install: libwxbase2.6-0:amd64 (2.6.3.2.2-5ubuntu1, automatic), tipptrainer-data-de:amd64 (0.6.0-17, automatic), libwxgtk2.6-0:amd64 (2.6.3.2.2-5ubuntu1, automatic), tipptrainer:amd64 (0.6.0-17), wx2.6-i18n:amd64 (2.6.3.2.2-5ubuntu1, automatic)End-Date: 2011-03-16  20:56:02Start-Date: 2011-03-16  21:28:07Remove: libwxbase2.6-0:amd64 (2.6.3.2.2-5ubuntu1), tipptrainer-data-de:amd64 (0.6.0-17), libwxgtk2.6-0:amd64 (2.6.3.2.2-5ubuntu1), tipptrainer:amd64 (0.6.0-17), wx2.6-i18n:amd64 (2.6.3.2.2-5ubuntu1)End-Date: 2011-03-16  21:28:16Start-Date: 2011-03-16  21:28:22Install: libwxbase2.6-0:amd64 (2.6.3.2.2-5ubuntu1, automatic), tipptrainer-data-de:amd64 (0.6.0-17, automatic), libwxgtk2.6-0:amd64 (2.6.3.2.2-5ubuntu1, automatic), tipptrainer:amd64 (0.6.0-17), wx2.6-i18n:amd64 (2.6.3.2.2-5ubuntu1, automatic)End-Date: 2011-03-16  21:28:27Start-Date: 2011-03-16  21:28:53Remove: libwxbase2.6-0:amd64 (2.6.3.2.2-5ubuntu1), tipptrainer-data-de:amd64 (0.6.0-17), libwxgtk2.6-0:amd64 (2.6.3.2.2-5ubuntu1), tipptrainer:amd64 (0.6.0-17), wx2.6-i18n:amd64 (2.6.3.2.2-5ubuntu1)End-Date: 2011-03-16  21:28:56Start-Date: 2011-03-16  21:31:49Install: klavaro:amd64 (1.5.0-1build1), libgtkdatabox-0.9.1-1:amd64 (0.9.1.1-3.1, automatic)End-Date: 2011-03-16  21:31:57Another problem that I didn't notice is that there is a problem with the graphics card also the visual effects can't be applied as in these photosit was working before.another problem appeared I can't install any software from software center i click the install but nothing happens i tried many programs but the same result!! the internet connection is ok!!I think it is virus but  heard that Linux is so powerful in security.I haven't seen a thing like this since windows 98 and XP first edition when viruses change desktop background and disable some menu items
Ubuntu 10.10 notification system area , many icons disappeared like network manager
ubuntu;power management;networkmanager;icons;bluetooth