If you haven't discovered it yet, Research In Motion is posting updates on the status of BlackBerry service at RIM.com (and on UK.BlackBerry.com). Here's the timeline and where things are at:

Wednesday 12th October - 9:45 (GMT-5)
BlackBerry subscribers in the Americas may be experiencing intermittent service delays this morning. We are working to resolve the situation as quickly as possible and we apologize to our customers for any inconvenience. We will provide a further update as soon as more information is available.

Wednesday 12th October - 12:00 (GMT+1)
We know that many of you are still experiencing service problems. The resolution of this service issue is our Number One priority right now and we are working night and day to restore all BlackBerry services to normal levels. We will continue to keep this page updated.

Tuesday 11th October - 21:30 (GMT+1)
The messaging and browsing delays that some of you are still experiencing were caused by a core switch failure within RIM's infrastructure. Although the system is designed to failover to a back-up switch, the failover did not function as previously tested. As a result, a large backlog of data was generated and we are now working to clear that backlog and restore normal service as quickly as possible. We sincerely apologise for the inconvenience caused to many of you and we will continue to keep you informed.

Tuesday 11th October - 16:00 (GMT+1)
Some of you are experiencing messaging and browsing delays. We are working to restore normal service as quickly as possible and we apologise for any inconvenience this has caused.

Monday 10th October - 20:46 (GMT+1)
Our sincere apologies to all of you affected by today's BlackBerry service issues.

Monday 10th October - 15:00 (GMT+1)
We are currently working to resolve an issue impacting some of our BlackBerry customers in the Europe, Middle East and Africa region. In the meantime, we apologise to you for any inconvenience, and thank you for your patience.