We had some weird issues pop up late last night with regards to BlackBerry connectivity. There were some issues with the BlackBerry server not recognizing some users data plans.
Two cases, you either 1) had BlackBerry dots and the status screen said you had BIS service, but couldn't connect or 2) had no BlackBerry dots, and no BIS service on the status screen, and also couldn't connect. Frustrating either way.
It wasn't something internal, but instead between the Rogers-RIM connection. It cleared its self up later today.