If you have entries for eth0 in /etc/network/interfaces and don't need them (and intend to have NM manage devices), then please edit that file again to remove these entries, which should have the icon appear again. This appears to have fixed the majority of issues in the duplicate bug 577678.
AFAICS, nm-applet is running (verify with " ps -ef | grep nm-applet" ) Different issues such as the DBUS error copied in comment #2 are separate issues, I think; they should have their own separate bug (if you're seeing this error at this point, please file a new bug using ' ubuntu-bug network-manager '). ** Changed in: network-manager-applet (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager-applet in Ubuntu. https://bugs.launchpad.net/bugs/589362 Title: NM-applet doesn't start Status in “network-manager-applet” package in Ubuntu: Incomplete Bug description: $ nm-applet --sm-disable ** (nm-applet:2638): DEBUG: old state indicates that this was not a disconnect 0 nm-applet not start, alternate 10.04 386 just installed qith network connect. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: network-manager-gnome 0.8-0ubuntu3 ProcVersionSignature: Ubuntu 2.6.32-22.35-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-22-generic i686 NonfreeKernelModules: nvidia Architecture: i386 CRDA: Error: [Errno 2] No existe el fichero ó directorio Date: Thu Jun 3 21:43:29 2010 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427.1) IpRoute: 192.168.5.0/24 dev eth0 proto kernel scope link src 192.168.5.2 169.254.0.0/16 dev eth0 scope link metric 1000 default via 192.168.5.1 dev eth0 metric 100 IwConfig: lo no wireless extensions. eth0 no wireless extensions. eth1 no wireless extensions. Keyfiles: Error: [Errno 2] No existe el fichero ó directorio ProcEnviron: LANG=es_ES.utf8 SHELL=/bin/bash RfKill: SourcePackage: network-manager-applet To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/589362/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp