Update: This issue has been resolved. If you're still having problems, hit up the comments and let us know!
It seems that some legacy device users are having some service issues today across Canada and the Asia Pacific regions. While not affecting those with BlackBerry 10 devices, legacy users are experiencing "delays in sending or receiving messages, registering their device, or using other services such as BlackBerry Messenger or BlackBerry Browser."
We're not sure just how widespread the issue is or when it will be resolved, but if you're one of the included bunch be sure to drop a comment in the forums thread below. This is a known issue right now so it should be resolved in the next few hours we hope. We'll report back if we find out anymore.