Those of us that use Microsoft MyPhone may have noticed the quick note from Microsoft that the service will be down from Monday 05-Oct-09 to Tuesday –

Microsoft My Phone Service Upgrade

On October 5^th, 2009 at 5AM (Pacific Daylight Time) (check your local time here) the Microsoft My Phone service will be unavailable while we upgrade the service.  The service will come back online on October 6^th, 2009 Tuesday morning PDT.  Stay tuned for more information.  You can also  follow us on http://twitter.com/msmyphone for updates.

An extended outage is not anticipated, so everything should be good to go for the WM 6.5 Launch on 06-Oct-09.