Comment 15 for bug 216908

There're quite a few solutions (though it seems that they do not always work for everybody) to by-pass the bug on the forum at http://ubuntuforums.org/showthread.php?s=30c564a89609f40a161cf027fc469262&p=4891868#post4891868
For info, since I did these, I have not had these message about network manager anymore at all. And in fact, I have changed... nothing. Just played a bit with the commands in the Login Window menu by deleting the sentence into brackets" AND putting them back again (i.e. = no change, except the date of the file?), and it works fine.