In case you wonder why things are so quiet today: Looks like Blackberry service is out for all/most of North America. The outage started at about 8pm EDT/5pm PDT on Tuesday.

and just as I posted this (8am EDT), my own T-Mobile Blackberry started to wake up and deliver email again.

Update:

RIM have acknowledged the incident, things appear operational now. Some mail delayed earlier may still be arriving now.