On June 11th, 2009 Yahoo! Groups will be undergoing maintenance. During this time 50% of groups will be unavailable for up to an hour. The outage is scheduled to begin some time between 2 and 3 pm PT (10-11 pm GMT).

While the maintenance is going on, all features of affected group, including messages, photos, attachments, etc. will be completely unavailable. However, once the outage concludes, any messages that were posted to these groups via email during this downtime will be distributed.

In an effort to better communicate to all of you, a "blast message" will be posted to all groups later today linking to this blog post. This message will be visible on all groups to all users.

Thank you for your patience—during the outage, this blog will remain up (and comments will remain open), and we will update you all as information becomes available.

- Gordon
Yahoo! Groups