Here is a quick fix for OpenOffice bug reported on Launchpad https://bugs.edge.launchpad.net/ubuntu/+source/openoffice.org/+bug/562027 that prevent Gnome logout if Quickstart is running.
Solution: change DocumentStoreUIEnabled in Recovery.xcu (OpenOffice) or main.xcd (Libreoffice) to false with this command
<?php
$URL="http://dl.panticz.de/libreoffice/scripts/DocumentStoreUIEnabled_false.sh";
echo "wget $URL -O - | bash -";
echo "<div><pre>";
</pre></div>$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
echo htmlspecialchars(curl_exec($c));curl_close($c);
echo "";?>
or use Diff to path Recovery.xcu
wget -nv http://dl.dropbox.com/u/4170695/openoffice/Recovery.xcu_DocumentStoreUIEnabled.diff -O - | \patch -p2 /usr/lib/openoffice/basis3.2/share/registry/data/org/openoffice/Office/Recovery.xcu
Optional: remove user personal Recovery.xcu files
find /home/*/.openoffice.org/ -name Recovery.xcu -exec rm {} \;
Links
https://bugs.launchpad.net/ubuntu/+source/openoffice.org/+bug/562027