How about releasing fixed packages into quantal ?

Here is a list of warning messages in quantal on my system as of today:

Processing triggers for libglib2.0-0:i386 ...
warning: Schema 'apps.gecko-mediaplayer.preferences' has path '/apps/gnome-mplayer/preferences/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.gnome-mplayer.preferences' has path '/apps/gnome-mplayer/preferences/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'com.canonical.notify-osd' has path '/apps/notify-osd/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'com.canonical.Unity.ApplicationsLens' has path '/desktop/unity/lenses/applications/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'com.canonical.Unity.Runner' has path '/desktop/unity/runner/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'com.canonical.Unity.FilesLens' has path '/desktop/unity/lenses/files/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'com.canonical.indicator.session' has path '/apps/indicator-session/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'com.ubuntu.update-manager' has path '/apps/update-manager/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard' has path '/apps/onboard/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.auto-show' has path '/apps/onboard/auto-show/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.keyboard' has path '/apps/onboard/keyboard/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.window' has path '/apps/onboard/window/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.window.landscape' has path '/apps/onboard/window/landscape/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.window.portrait' has path '/apps/onboard/window/portrait/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.icon-palette' has path '/apps/onboard/icon-palette/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.icon-palette.landscape' has path '/apps/onboard/icon-palette/landscape/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.icon-palette.portrait' has path '/apps/onboard/icon-palette/portrait/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.universal-access' has path '/apps/onboard/universal-access/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.theme-settings' has path '/apps/onboard/theme-settings/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.lockdown' has path '/apps/onboard/lockdown/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'apps.onboard.scanner' has path '/apps/onboard/scanner/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.freedesktop.Geoclue' has path '/apps/geoclue/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.freedesktop.Telepathy.Logger' has path '/apps/telepathy-logger/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.freedesktop.gstreamer-0.10.default-elements' has path '/desktop/gstreamer/0.10/default-elements/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.Cheese' has path '/apps/cheese/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.Vino' has path '/desktop/gnome/remote-access/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.crypto.cache' has path '/desktop/gnome/crypto/cache/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.crypto.pgp' has path '/desktop/gnome/crypto/pgp/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.EpiphanyExtensions' has path '/apps/epiphany-extensions/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.EpiphanyExtensions.smart-bookmarks' has path '/apps/epiphany-extensions/smart-bookmarks/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.EpiphanyExtensions.tab-states' has path '/apps/epiphany-extensions/tab-states/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.functionselector' has path '/apps/gnumeric/functionselector/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.autocorrect' has path '/apps/gnumeric/autocorrect/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.plugins' has path '/apps/gnumeric/plugins/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.autoformat' has path '/apps/gnumeric/autoformat/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.printsetup' has path '/apps/gnumeric/printsetup/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.dialogs.rs' has path '/apps/gnumeric/dialogs/rs/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.stf' has path '/apps/gnumeric/stf/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.stf.export' has path '/apps/gnumeric/stf/export/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.searchreplace' has path '/apps/gnumeric/searchreplace/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric' has path '/apps/gnumeric/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.undo' has path '/apps/gnumeric/undo/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core' has path '/apps/gnumeric/core/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.defaultfont' has path '/apps/gnumeric/core/defaultfont/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.workbook' has path '/apps/gnumeric/core/workbook/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.gui' has path '/apps/gnumeric/core/gui/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.gui.screen' has path '/apps/gnumeric/core/gui/screen/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.gui.toolbars' has path '/apps/gnumeric/core/gui/toolbars/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.gui.editing' has path '/apps/gnumeric/core/gui/editing/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.gui.window' has path '/apps/gnumeric/core/gui/window/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.xml' has path '/apps/gnumeric/core/xml/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.file' has path '/apps/gnumeric/core/file/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.file.save' has path '/apps/gnumeric/core/file/save/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.sort' has path '/apps/gnumeric/core/sort/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.sort.default' has path '/apps/gnumeric/core/sort/default/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.core.sort.dialog' has path '/apps/gnumeric/core/sort/dialog/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.cut-and-paste' has path '/apps/gnumeric/cut-and-paste/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.plugin' has path '/apps/gnumeric/plugin/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.plugin.latex' has path '/apps/gnumeric/plugin/latex/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.plugin.lpsolve' has path '/apps/gnumeric/plugin/lpsolve/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.gnumeric.plugin.glpk' has path '/apps/gnumeric/plugin/glpk/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.seahorse' has path '/apps/seahorse/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.seahorse.manager' has path '/apps/seahorse/listing/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.system.locale' has path '/system/locale/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.system.proxy' has path '/system/proxy/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.system.proxy.http' has path '/system/proxy/http/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.system.proxy.https' has path '/system/proxy/https/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.system.proxy.ftp' has path '/system/proxy/ftp/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.gnome.system.proxy.socks' has path '/system/proxy/socks/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.nemiver' has path '/apps/nemiver/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing.org-yorba-shotwell-publishing-piwigo' has path '/apps/shotwell/sharing/org-yorba-shotwell-publishing-piwigo/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing.org-yorba-shotwell-publishing-yandex-fotki' has path '/apps/shotwell/sharing/org-yorba-shotwell-publishing-yandex-fotki/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell' has path '/apps/shotwell/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.preferences' has path '/apps/shotwell/preferences/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.preferences.ui' has path '/apps/shotwell/preferences/ui/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.preferences.slideshow' has path '/apps/shotwell/preferences/slideshow/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.preferences.window' has path '/apps/shotwell/preferences/window/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.preferences.files' has path '/apps/shotwell/preferences/files/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.crop-settings' has path '/apps/shotwell/crop-settings/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.preferences.editing' has path '/apps/shotwell/preferences/editing/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing' has path '/apps/shotwell/sharing/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing.facebook' has path '/apps/shotwell/sharing/facebook/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing.flickr' has path '/apps/shotwell/sharing/flickr/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing.picasa' has path '/apps/shotwell/sharing/picasa/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.sharing.youtube' has path '/apps/shotwell/sharing/youtube/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.dataimports' has path '/apps/shotwell/dataimports/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.video' has path '/apps/shotwell/video/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.printing' has path '/apps/shotwell/printing/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.plugins' has path '/apps/shotwell/plugins/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.
warning: Schema 'org.yorba.shotwell.plugins.enable-state' has path '/apps/shotwell/plugins/enable-state/'.  Paths starting with '/apps/', '/desktop/' or '/system/' are deprecated.