I am experiencing the same issue with an up-to-date Lucid. Note that I don't have a way to reliably reproduce 100% of the time: sometimes after boot gnome-do will work just fine (I use it mostly as an application launcher, so for instance entering "th" will find thunderbird), and sometimes it won't find any results for any search. I am in this latter situation right now, here is the output I get when launching gnome-do with the --debug switch: osomon@granuja:~$ gnome-do --debug WARNING: [Do.Banshee,1.0] Could not load some add-in assemblies: File '/usr/lib/banshee-1/Banshee.CollectionIndexer.dll' not found. ERROR: Errors found in add-in '/usr/lib/gnome-do/plugins/Banshee.dll: ERROR: The file '/usr/lib/banshee-1/Banshee.CollectionIndexer.dll' referenced in the manifest could not be found. [Info 09:32:29.102] [Services] Successfully located service of type IPreferencesService. [Info 09:32:29.110] [Services] Successfully located service of type ILogService. [Info 09:32:29.110] [Services] Successfully located service of type ISecurePreferencesService. [Info 09:32:29.115] [Services] Successfully located service of type INotificationsService. [Debug 09:32:29.117] [InterfaceManager] "Glass" interface was loaded [Info 09:32:29.120] [Services] Successfully located service of type ILogService. [Debug 09:32:29.120] [InterfaceManager] "Docky" interface was loaded [Debug 09:32:29.121] [InterfaceManager] "Mini" interface was loaded [Debug 09:32:29.121] [InterfaceManager] "Classic" interface was loaded [Debug 09:32:29.122] [InterfaceManager] "Nouveau" interface was loaded [Debug 09:32:29.125] [PluginManager] Loaded "SessionCommandsItemSource" from plugin. [Debug 09:32:29.125] [PluginManager] Loaded "NotesItemSource" from plugin. [Info 09:32:29.131] [Services] Successfully located service of type IPreferencesService. [Info 09:32:29.131] [Services] Successfully located service of type ISecurePreferencesService. [Info 09:32:29.135] [Services] Successfully located service of type ICoreService. [Info 09:32:29.136] [Services] Successfully located service of type INetworkService. [Debug 09:32:29.140] [PluginManager] Loaded "WeatherItemSource" from plugin. [Info 09:32:29.142] [Services] Successfully located service of type AbstractApplicationService. [Debug 09:32:29.142] [PluginManager] Loaded "InternalItemSource" from plugin. [Debug 09:32:29.143] [PluginManager] Loaded "ItemSourceItemSource" from plugin. [Debug 09:32:29.144] [PluginManager] Loaded "PlacesItemSource" from plugin. [Debug 09:32:29.145] [PluginManager] Loaded "ApplicationItemSource" from plugin. [Debug 09:32:29.145] [PluginManager] Loaded "GNOMESpecialLocationsItemSource" from plugin. [Debug 09:32:29.146] [PluginManager] Loaded "ProfileItemSource" from plugin. [Debug 09:32:29.146] [PluginManager] Loaded "ScreenshotItemSource" from plugin. [Debug 09:32:29.173] [PluginManager] Loaded "ScreenItemSource" from plugin. (Do:17455): Wnck-CRITICAL **: wnck_set_client_type got called multiple times. [Info 09:32:29.199] [Services] Successfully located service of type PathsService. [Debug 09:32:29.200] [PluginManager] Loaded "WindowItemSource" from plugin. [Debug 09:32:29.201] [PluginManager] Loaded "EmailAction" from plugin. [Debug 09:32:29.201] [PluginManager] Loaded "OpenAction" from plugin. [Debug 09:32:29.206] [PluginManager] Loaded "OpenUrlAction" from plugin. [Debug 09:32:29.206] [PluginManager] Loaded "OpenWithAction" from plugin. [Debug 09:32:29.206] [PluginManager] Loaded "RevealAction" from plugin. [Debug 09:32:29.206] [PluginManager] Loaded "RunAction" from plugin. [Debug 09:32:29.207] [PluginManager] Loaded "OpenSearchAction" from plugin. [Debug 09:32:29.207] [PluginManager] Loaded "PastebinAction" from plugin. [Debug 09:32:29.208] [PluginManager] Loaded "NewNoteAction" from plugin. [Debug 09:32:29.208] [PluginManager] Loaded "SearchNotesAction" from plugin. [Debug 09:32:29.208] [PluginManager] Loaded "DefineAction" from plugin. [Debug 09:32:29.209] [PluginManager] Loaded "CopyToClipboardAction" from plugin. [Debug 09:32:29.209] [PluginManager] Loaded "MakeUrlTinyAction" from plugin. [Debug 09:32:29.209] [PluginManager] Loaded "RunInTerminalAction" from plugin. [Debug 09:32:29.209] [PluginManager] Loaded "OpenTerminalHereAction" from plugin. [Debug 09:32:29.210] [PluginManager] Loaded "GoogleCalculatorAction" from plugin. [Debug 09:32:29.210] [PluginManager] Loaded "TakeScreenshotAction" from plugin. [Debug 09:32:29.210] [PluginManager] Loaded "WindowMinimizeAction" from plugin. [Debug 09:32:29.210] [PluginManager] Loaded "WindowMaximizeAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "WindowCloseAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "WindowFocusAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "WindowMoveAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "ScreenTileAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "ScreenCascadeAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "ScreenRestoreAction" from plugin. [Debug 09:32:29.211] [PluginManager] Loaded "ScreenSwapAction" from plugin. [Debug 09:32:29.212] [PluginManager] Loaded "ShowDesktopAction" from plugin. [Info 09:32:29.212] [Services] Successfully located service of type AbstractSystemService. [Debug 09:32:29.213] [SystemService] Existing application instance detected. Summon and bail. Now, if I kill all running instances (killall gnome-do) and launch it again with the --debug switch, it works fine (i.e. it finds results) and here is the output: osomon@granuja:~$ gnome-do --debug WARNING: [Do.Banshee,1.0] Could not load some add-in assemblies: File '/usr/lib/banshee-1/Banshee.CollectionIndexer.dll' not found. ERROR: Errors found in add-in '/usr/lib/gnome-do/plugins/Banshee.dll: ERROR: The file '/usr/lib/banshee-1/Banshee.CollectionIndexer.dll' referenced in the manifest could not be found. [Info 09:35:10.253] [Services] Successfully located service of type IPreferencesService. [Info 09:35:10.260] [Services] Successfully located service of type ILogService. [Info 09:35:10.260] [Services] Successfully located service of type ISecurePreferencesService. [Info 09:35:10.265] [Services] Successfully located service of type INotificationsService. [Debug 09:35:10.268] [InterfaceManager] "Glass" interface was loaded [Info 09:35:10.270] [Services] Successfully located service of type ILogService. [Debug 09:35:10.270] [InterfaceManager] "Docky" interface was loaded [Debug 09:35:10.271] [InterfaceManager] "Mini" interface was loaded [Debug 09:35:10.271] [InterfaceManager] "Classic" interface was loaded [Debug 09:35:10.272] [InterfaceManager] "Nouveau" interface was loaded [Debug 09:35:10.275] [PluginManager] Loaded "SessionCommandsItemSource" from plugin. [Debug 09:35:10.276] [PluginManager] Loaded "NotesItemSource" from plugin. [Info 09:35:10.281] [Services] Successfully located service of type IPreferencesService. [Info 09:35:10.281] [Services] Successfully located service of type ISecurePreferencesService. [Info 09:35:10.285] [Services] Successfully located service of type ICoreService. [Info 09:35:10.287] [Services] Successfully located service of type INetworkService. [Debug 09:35:10.291] [PluginManager] Loaded "WeatherItemSource" from plugin. [Info 09:35:10.292] [Services] Successfully located service of type AbstractApplicationService. [Debug 09:35:10.293] [PluginManager] Loaded "InternalItemSource" from plugin. [Debug 09:35:10.293] [PluginManager] Loaded "ItemSourceItemSource" from plugin. [Debug 09:35:10.295] [PluginManager] Loaded "PlacesItemSource" from plugin. [Debug 09:35:10.296] [PluginManager] Loaded "ApplicationItemSource" from plugin. [Debug 09:35:10.296] [PluginManager] Loaded "GNOMESpecialLocationsItemSource" from plugin. [Debug 09:35:10.297] [PluginManager] Loaded "ProfileItemSource" from plugin. [Debug 09:35:10.297] [PluginManager] Loaded "ScreenshotItemSource" from plugin. [Debug 09:35:10.340] [PluginManager] Loaded "ScreenItemSource" from plugin. (Do:18010): Wnck-CRITICAL **: wnck_set_client_type got called multiple times. [Info 09:35:10.366] [Services] Successfully located service of type PathsService. [Debug 09:35:10.366] [PluginManager] Loaded "WindowItemSource" from plugin. [Debug 09:35:10.367] [PluginManager] Loaded "EmailAction" from plugin. [Debug 09:35:10.368] [PluginManager] Loaded "OpenAction" from plugin. [Debug 09:35:10.372] [PluginManager] Loaded "OpenUrlAction" from plugin. [Debug 09:35:10.372] [PluginManager] Loaded "OpenWithAction" from plugin. [Debug 09:35:10.373] [PluginManager] Loaded "RevealAction" from plugin. [Debug 09:35:10.373] [PluginManager] Loaded "RunAction" from plugin. [Debug 09:35:10.373] [PluginManager] Loaded "OpenSearchAction" from plugin. [Debug 09:35:10.374] [PluginManager] Loaded "PastebinAction" from plugin. [Debug 09:35:10.374] [PluginManager] Loaded "NewNoteAction" from plugin. [Debug 09:35:10.374] [PluginManager] Loaded "SearchNotesAction" from plugin. [Debug 09:35:10.375] [PluginManager] Loaded "DefineAction" from plugin. [Debug 09:35:10.375] [PluginManager] Loaded "CopyToClipboardAction" from plugin. [Debug 09:35:10.376] [PluginManager] Loaded "MakeUrlTinyAction" from plugin. [Debug 09:35:10.376] [PluginManager] Loaded "RunInTerminalAction" from plugin. [Debug 09:35:10.376] [PluginManager] Loaded "OpenTerminalHereAction" from plugin. [Debug 09:35:10.377] [PluginManager] Loaded "GoogleCalculatorAction" from plugin. [Debug 09:35:10.377] [PluginManager] Loaded "TakeScreenshotAction" from plugin. [Debug 09:35:10.377] [PluginManager] Loaded "WindowMinimizeAction" from plugin. [Debug 09:35:10.377] [PluginManager] Loaded "WindowMaximizeAction" from plugin. [Debug 09:35:10.377] [PluginManager] Loaded "WindowCloseAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "WindowFocusAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "WindowMoveAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "ScreenTileAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "ScreenCascadeAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "ScreenRestoreAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "ScreenSwapAction" from plugin. [Debug 09:35:10.378] [PluginManager] Loaded "ShowDesktopAction" from plugin. [Info 09:35:10.379] [Services] Successfully located service of type AbstractSystemService. [Debug 09:35:10.380] [SystemService] No other application instance detected. Continue startup. [Debug 09:35:10.401] [Controller] Setting theme Classic [Info 09:35:10.525] [UniverseManager] Reloading universe... [Debug 09:35:10.525] [UniverseManager] Reloading actions... [Debug 09:35:10.535] [UniverseManager] Reloading item source "Commandes de la Session Gnome"... [Debug 09:35:10.536] [UniverseManager] Reloading item source "Tomboy Notes"... [Debug 09:35:10.778] [UniverseManager] Reloading item source "Weather Commands"... [Debug 09:35:10.778] [UniverseManager] Reloading item source "Éléments internes de GNOME Do"... [Debug 09:35:10.779] [UniverseManager] Reloading item source "Sources d'éléments de GNOME Do"... [Debug 09:35:10.784] [UniverseManager] Reloading item source "Firefox Places"... [Debug 09:35:10.853] [UniverseManager] Reloading item source "Applications"... [Debug 09:35:11.027] [UniverseManager] Reloading item source "Dossiers spéciaux de GNOME"... [Debug 09:35:11.038] [UniverseManager] Reloading item source "Profils de Terminal GNOME"... [Debug 09:35:11.060] [UniverseManager] Reloading item source "GNOME Screenshot Items"... [Debug 09:35:11.064] [UniverseManager] Reloading item source "Window Screen Items"... [Debug 09:35:11.065] [UniverseManager] Reloading item source "Generic Window Items"... [Info 09:35:11.065] [UniverseManager] Universe contains 373 items. [Info 09:35:11.070] [AbstractWeatherSource] Weather Underground: Reloading weather data [Debug 09:35:11.073] [AbstractWeatherSource] Weather Underground: Fetching XML file 'http://api.wunderground.com/auto/wui/geo/WXCurrentObXML/index.xml?query=50014' [Debug 09:35:12.277] [AbstractWeatherSource] Weather Underground: Fetching XML file 'http://api.wunderground.com/auto/wui/geo/ForecastXML/index.xml?query=50014' (Do:18010): Gdk-WARNING **: /build/buildd/gtk+2.0-2.20.1/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window [Debug 09:35:14.447] [RelevanceProvider] Successfully loaded learned usage data. At a first glance, it doesn't seem to tell much about what's going on in the first situation (not finding results). I suppose the interesting piece of log is that of the automatic launch of gnome-do when the session is started. I'll try to log that and reproduce the issue, and will post my findings here.