Courtesy of our friends at DataOutages.com:
RIM Scheduled Outage March 29, 2008
Time: Normally scheduled window (2a - 6a EDT)
Details: A full 4 hour outage is scheduled for all BIS & BES users in the Americas for RIM database maintenance. Any BES connected to srp.na.blackberry.net is expected to be impacted. No mail / activations will be possible during this outage. This is a 100% outage.
For more details on the outage, click here. Unlike the last "planned" outage, I'm going to try and sleep through this one.