Yeah, as it turns out, all I needed to do was a battery pull to get everything working again. I know that a battery pull often fixes oddities such as this, but I didn't consider it necessary as the BlackBerry rebooted after installing BBM 5.
Oh well... live and learn as they say.
Semper Fi 3/2/2
"Wow" is now overused. Therefore, I will use "Magic bananas" instead.