T-Mobile's Sidekick data outage entered its third day on Sunday, according to The Consumerist. The official word:
While we anticipate a significant portion of data services to be restored by Monday, some richer data services may lag. We sincerely apologize for the inconvenience, and appreciate your patience as we work hard with Danger/Microsoft to resolve this issue. We will continue to keep our customers updated as we have news to share.