"None of the tricks" didn't worked because (please don't ask me why) I had one of my Ubuntu workstations logged in Windows Live SkyDrive with the same credentials as the one Empathy tried using to connect to MSN: logged out from SkyDrive and connection successfully established via Empathy + bespoken tricks.
Follow up to my previous comment (#113).
"None of the tricks" didn't worked because (please don't ask me why) I had one of my Ubuntu workstations logged in Windows Live SkyDrive with the same credentials as the one Empathy tried using to connect to MSN: logged out from SkyDrive and connection successfully established via Empathy + bespoken tricks.