10/10/08—On Friday, October 10, 2008, from 6 PM PST to midnight, ArcGIS Online will undergo system upgrades to improve our infrastructure. We anticipate minimal impact to your applications during this time, but you may need to reconnect to the ArcGIS Online servers. However, if you experience any ongoing service availability or performance issues as a result of this change, please post a description of them to this blog.